A marketing study conducts 60 significance tests about means and proportions for several groups. Of them, 3 tests are statistically significant at the 0.05 level. The study's final report stresses only the tests with significant results, not mentioning the other 57 tests. What is misleading about this?
Answers
Answer:
hello your question lacks the required options attached is a picture of the complete question
One would expect about 5% of tests to be significant just by chance if the null hypothesis is true, and for 60 tests, this is 0.05(60) = 3 tests. This could explain why these tests are statistically significant.
Step-by-step explanation:
What is misleading about this is the study's final report because this marketing study was carried out with a level of significance of 5% (0.05) which means that if we carry the same study with varying sample data we will mostly like arrive at a conclusion against our null conclusion 5% of the time and this is not good for the the study because it is a type 1 error and has to be eliminated and it cannot be eliminated totally .
hence One would expect about 5% of tests to be significant just by chance if the null hypothesis is true, and for 60 tests, this is 0.05(60) = 3 tests. This could explain why these tests are statistically significant.
We are told that the marketing study conducts 60 tests and that 3 tests are statistically significant at the 0.05 level, in addition to this the study's final report emphasizes only the tests with significant results without mentioning the other 57 tests.
We can interpret it as follows:
By the 0.05 level, we mean that 5% of the tests are significant by chance when the null hypothesis is true.
Here 5% of the 60.
60 * 0.05 = 3
Therefore it only mentions 3 tests and does not mention the other 57 tests, which in itself is misleading because all 60 tests should be fully mentioned in the final report.
Related Questions
please help asap! will mark as brainliest! and please no guessing! thank you :)
A circle has a circumference of q and an area of p. Define p in terms of q. Which one is the correct answer?
a. 4q^2π
b. q/2π
c.q^2/π
d. q^2/4π
Answers
Answer:
d. q^2/(4π)
Step-by-step explanation:
The circumference in terms of r is ...
q = 2πr
So, the radius in terms of q is ...
r = q/(2π)
The area in terms of radius is ...
p = πr^2
so, in terms of q, it is ...
p = π(q/(2π))^2 = (π/π^2)(q^2/4)
p = q^2/(4π)
_____
Comment on answer
It is unfortunate that your answer choice doesn't have parentheses on the denominator. They are required by the Order of Operations. As written, none of the choices is correct, as the last one must be interpreted as ...
(q^2/4)π
which is quite different from the correct answer of q^2/(4π).
What is 5 4/5 - 2 2/3 as a fraction? If needed please write as a mixed number
Answers
Answer:
2 4/5
Step-by-step explanation:
5 4/5 - 2 3/3=2 4/5
Answer:
47/15 or 3 2/15
Step-by-step explanation:
first put it into improper fraction
so 29/5 minus 8/3
then find the least common denominator which is 15
87/15 minus 40/15 which is 47/15
simplify it
A new American graduate is contemplating buying a Japanese, German, or an American car. No
matter the type of car, he plans to buy a new one at the end of 8 years.
Japanese car will cost $30,000 and have a fuel usage of 23 Miles Per gallon (mpg) for the first 2
years, and will decrease by 3% per year thereafter. Repair cost will start at $700 per year, and
increase by 3% per year. At the end of year 8, the car can be sold for $5000. Insurance cost will
be $700 for the first year, increasing by 2% per year thereafter.
Answers
Answer:
Japanese car
Step-by-step explanation:
Given
problem details in Attachment 1
Find
the most economical car
Solution
The attached spreadsheet shows the costs of repairs, insurance, and gas for each of the cars, using the cost factors described in the problem statement. (Numbers are displayed rounded to dollars.)
Mileage each year is assumed to be 150,000/8 = 18,750.
The "present value" line shows the present (year 0) value of the listed costs. The present value is the sum of values divided by 1.05^(year number). It is calculated using the spreadsheet NPV function.
The green total is the sum of present values to its right and the initial cost. The end value is subtracted after it is discounted by 1.05^8.
The Japanese car has the lowest present value.
___
The third attachment is the spreadsheet in Open Office format.
The question below is fill-in-the-blank. Be sure that you follow the instructions since it is computer graded. Either fill in the exact value you get from StatCrunch (no rounding) OR write your answer selection exactly as it is written.
A soft-drink company is conducting research to select a new design for the can. A random sample of participants has been selected. Instead of a typical taste test with two different sodas, they gave each participant the same soda in two different cans. One can was predominantly red, and the other predominantly blue. The order was chosen randomly. Participants were asked to rate each drink on a scale of 1 to 10. The data are recorded below and α=0.05.
Rater Red Blue
1 4 2
2 7 4
3 3 9
4 8 8
5 5 2
6 9 9
7 7 3
8 5 7
9 6 6
10 9 9
11 8 7
12 3 10
13 6 3
14 8 4
15 9 5
16 7 6
Does this sample indicate that there is a difference in the ratings based on can color? Test an appropriate hypothesis. Assume conditions have been met and that µd = red - blue
Hypotheses:
H0: µd=0; The mean difference of ratings is zero.
H0: µd (<, >, not equal to) 0; The mean difference of ratings is (greater than, less than, different than) zero.
Calculations: Type each value EXACTLY as they are given in StatCrunch
Mean:
Std. Err.:
DF:
T-Stat:
P-value:
Conclusion:Since the P-value is (low, high), we (reject, fail to reject) the null hypothesis. There (is/is not) sufficient evidence to suggest that can color (increases, reduces, changes) the average rating of the soda.
Answers
Answer:
Step-by-step explanation:
Hello!
The random sample of n= 16 participants was asked to taste test two different sodas cans and rate them on a scale from 1 to 10. The cans contained the same type of soda but differ in color.
Since each participant tasted and ranked the two types of soda cans, you have per person a pair of data (X₁;X₂):
Where
X₁: Rank given to the red soda.
X₂: Rank given to the blue soda.
As said, the data is arranged in pairs per experimental unit, so these two variables are dependent, to study them is best to determine a third variable, the difference between X₁ and X₂:
Xd: X₁ - X₂
Assuming Xd~N(μd;σd²)
The objective is to test if there is any difference between the ratings based on the can color. The statistic hypotheses are:
H₀: μd=0
H₁: μd≠0
To calculate the descriptive statistics you have to calculate first the difference of each pair of ratings (see table in attachment)
Mean:
X[bar]d= ∑Xd/n= -6/16= -0.38
Variance
[tex]S_d^2=\frac{1}{n-1} [sumX_d^2-\frac{(sumXd)^2}{n} ]= \frac{1}{15}[64-\frac{(-6)}{^16} ]= 4.12[/tex]
Standard deviation
Sd= √4.12= 2.03
Statistic [tex]t= \frac{X[bar]_d-Mu_d}{\frac{Sd}{\sqrt{n} } } ~~t_{n-1}[/tex]
Df: n-1= 16-10 15
[tex]t_{H_0}= \frac{-0.38-0}{\frac{2.03}{4} } = -0.74[/tex]
P-value:
P(t₁₅≤-0.74) + P(t₁₅≥0.74)= P(t₁₅≤-0.74) + (1 - P(t₁₅≤0.74))= 0.2354 + (1 - 0.7646)= 0.4708
The decision rule for the p-value approach is:
If p-value ≤ α, reject the null hypothesis.
If p-value > α, do not reject the null hypothesis.
α: 0.05
The p-value is greater than the level of significance, the decision is to not reject the null hypothesis.
At a 5% significance level, there is no significant evidence to reject the null hypothesis. You can conclude that there is no difference between the rankings of the red and blue cans. I.e. there is no evidence to suggest that the can color changes the average ranting of the soda.
I hope this helps!
The best interpretation of the coefficient of Q2 (-0.054) in the regression equation is:_________.
a) the revenues in the second quarter of a year is approximately 5.4% lower than the average over all 4 quarters.
b) the revenues in the second quarter of a year is approximately 5.4% lower than it would be during the fourth quarter.
c) the revenues in the second quarter of a year is approximately 11.69% lower than it would be during the fourth quarter.
d) the revenues in the second quarter of a year is approximately 11.69% lower than the average over all 4 quarters.
Answers
Answer:
The correct answer is (b) the revenues in the second quarter of a year is approximately 5.4% lower than it would be during the fourth quarter
Explanation:
Solution:
Given that
Log₁₀ Y = 6.012 + 0.012 X - 0.129 Q₁
= -0.054 Q₂ + 0.098 Q₃
Now,
Given that X =0
We substitute for Q₁ = 1
Thus,
Y = 6.012 + 0.012 (0) - 0.129 (1)
= -0.054 (0) + 0.098 (0)
= 6.012 - 0.129
=5.973
So
Q₂ = 1
Y = 6.102 - 0.054 (1) + 0.012 (0)
= - 0.129 (0) + 0.098 (0)
= 6.012 - 0.054
= 6.048
For Q₃=1
Y = 6.012 + 0.012 (0) - 0.129 (0)
= -0.054 (0) + 0.098 (1)
= 6.102 + 0.098
=6.2
From the given question, the option b is correct.
Note: Kindly find an attached copy of the complete question below.
What is -5+8=-3y+10 equal I’m so lost
Answers
Answer:
y=7/3
Step-by-step explanation:
Answer:
7/3 = y
Step-by-step explanation:
-5+8=-3y+10
3 = -3y + 10
Subtract 10 from each side
3- 10 = -3y +10-10
-7 = -3y
Divide each side by -3
-7/-3 = -3y/-3
7/3 = y
given f(x) =x^2 -10x+22 what is the domain of f
Answers
Answer:
[tex] f(x) = x^2 -10x +22[/tex]
And we want to find the domain. And that represent the possible values for x. Since we have a quadratic function we have that the domain would be all the reals, and we can write:
[tex] D= [x \in R][/tex]
Where D represent the domain and R the set of the real numbers.
Step-by-step explanation:
For this case we have the following function:
[tex] f(x) = x^2 -10x +22[/tex]
And we want to find the domain. And that represent the possible values for x. Since we have a quadratic function we have that the domain would be all the reals, and we can write:
[tex] D= [x \in R][/tex]
Where D represent the domain and R the set of the real numbers.
Answer:
d
Step-by-step explanation:
i just got it right.:)
Points E, F, and D are located on circle C. Circle C is shown. Line segments E C and D F are radii. Lines are drawn from points E and D to point F to form chords E F and D F. Arc E D is 68 degrees. The measure of arc ED is 68°. What is the measure of angle EFD? 34° 68° 112° 132°
Answers
Answer:
Option (1). 34°
Step-by-step explanation:
From the figure attached, CE and CD are the radii of the circle C.
Central angle CED formed by the intercepted arc DE = 68°
Since measure of an arc = central angle formed by the intercepted arc
Therefore, m∠CED = 68°
Since m∠EFD = [tex]\frac{1}{2}(m\angle ECD)[/tex] [Central angle of an intercepted arc measure the double of the inscribed angle by the same arc]
Therefore, m∠EFD = [tex]\frac{1}{2}(68)[/tex]
= 34°
Therefore, Option (1) 34° will be the answer.
Answer:
34 (100% Correct)
Step-by-step explanation:
Which rule describes the translation
Answers
Answer:
[tex]T_{3}, _{-2} (x,y)[/tex]
Answer:
T3, –2(x, y)
Step-by-step explanation:
I took the test lol
1 describe how the figures are alike 2Describe how the figures are different.
Answers
Answer:
they are all polyhedrons and 3 dimensional shapes but they all have different volumes and surface areas
A 10-sided fair die, a 20-sided fair die, and a 12-sided fair dice are rolled. What is the probability of all three happening: Showing 8 on the first die Showing either 19 or 20 on the second die Showing an odd number on the third die
Answers
Answer:
0.5%
Step-by-step explanation:
The number of faces of each die what it indicates is the total number of events.
On the first die, it has 10 sides and an 8 must come out, that is, 1 event out of 10 possible, therefore the probability is:
1/10
On the second die, which has 20 sides, 19 or 20 can come out, that is 2 events out of 20 possible, so the probability is:
2/20
And on the third die, which is 12 sides, they tell us that an odd number can come out, the odd numbers would be 1, 3, 5, 7, 9, 11; that is, 6 events out of 12 possible, the probability would be:
6/12
Now the final probability would be the product of all:
(1/10) * (2/20) * (6/12) = 0.005
In other words, the probability of this happening is 0.5%
The problem has been started for you. 8 StartLongDivisionSymbol 468 EndLongDivisionSymbol minus 40 = 68. 68 minus 64 to get a remainder of 4 and a quotient of 58. What is the quotient? A. 58 B. 58.5 C. 58.ModifyingAbove 5 with bar D. 59
Answers
Division is one of the four fundamental arithmetic operations. The quotient for this division is 58.5.
What is Division?The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.
Given the problem is been started, therefore, the division is done as 468÷8. Hence, the quotient for this division is 58.5.
Learn more about Division:
https://brainly.com/question/369266
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Answer:
58.5
Step-by-step explanation:
Solve the equation.
43.6 = n + 17.5
Answers
Answer:
26.1 = n
Step-by-step explanation:
43.6 = n + 17.5
Subtract 17.5 from each side
43.6-17.5 = n + 17.5-17.5
26.1 = n
Answer:
[tex]n = 26.1[/tex]
Step-by-step explanation:
[tex]43.6 = n + 17.5 \\ 43.6 - 17.5 = n \\n = 26.1 \\ [/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Evaluate the following algebraic expression:
2 x + y for x = 1 and y = 1
Answers
Answer:
3
Step-by-step explanation:
2*1+1
2+1
3
how this helps :)
What type of angels are <5 and <6?
Answers
Answer: Supplementary Angles
Step-by-step explanation:
∠5 and ∠6 are supplementary angles. If you look at their position, they are right next to each other. Both angles added together makes a straight line, which is 180°. Any 2 angles that make 180° are called supplementary angles.
Question 5
Provide an appropriate response.
For the stem-and-leaf plot below, what are the maximum and minimum entries?
Stem
ES
1
ions
2
Leaf
77889
011234456677788999
01123445566 678 899
58
3
4
om
max: 47 min: 18
max:45min 17
35
max 38min: 7
max 48. min 17
Answers
Answer:
max 48, min 17
Step-by-step explanation:
Apparently, your plot is supposed to be ...
1 | 77889
2 | 011234456677788999
3 | 01123445566678899
4 | 58
The smallest stem is 1, and its smallest leaf is 7, representing a value of 17.
The largest stem is 4, and its largest leaf is 8, representing a value of 48.
The extremes represented by this plot are: max 48, min 17.
The chef at a school cafeteria asked 100 male and 100 female students
whether they like peas. 42 of the males said they like peas. 64 of the females
said they dislike peas. Which two-way table correctly shows these results?
Answers
Answer:
A
Step-by-step explanation:
The best way to do is this by cancellation. Cancel out the answers that are incorrect.
D is incorrect. There are 100 male students and 100 female students. This table shows that there 94 male students and 106 female students.
C and B are both incorrect because they say that there are 42 male students that dislike peas. Really, there are 42 male students that like peas.
This leaves you with letter A. The table matches the data given, so this is the answer.
The table shows the result of the statement given below.
Given that, the chef at a school cafeteria asked 100 male and 100 female students whether they like peas.
42 of the males said they like peas. 64 of the females said they dislike peas.
The number of males who like peas=42 and the number of males who dislikes peas=58.
The number of females who like peas=36 and the number of females who dislikes peas=64.
The table shows the result of the statement given below.
To learn more about the data table visit:
https://brainly.com/question/17084863.
#SPJ2
16.
A soccer team has 11 players on the field at the end of a scoreless game. According to league
coach must select 5 of the players and designate an order in which they will take penalty
game. According to league rules, the
(a) Is this a permutation or a combination? Why?
(b) How many different ways are there for the coach to do this?
Answers
Answer:
a) Permutation, because the coach has to designate an order in which they will take penalty
b) There are 55,440 different ways for the coach to do this.
Step-by-step explanation:
It the order is not important, we have a combination.
If the order is important, we have a permutation.
In this question:
5 players from a set of 11 and designate an order.
This means that the order is important, and we have a permutation.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
[tex]P_{(n,x)} = \frac{n!}{(n-x)!}[/tex]
(a) Is this a permutation or a combination? Why?
Permutation, because the coach has to designate an order in which they will take penalty
(b) How many different ways are there for the coach to do this?
[tex]P_{(11,5)} = \frac{11!}{(11-5)!} = 55440[/tex]
There are 55,440 different ways for the coach to do this.
Answer:
B
Step-by-step explanation:
A customer at a bakery paid $78.30 for donuts and cupcakes. Each donut cost $1.95 and each cupcake cost $2.85. If they bought a total of 30 donuts and cupcakes, how many donuts did they buy?
Answers
Answer:
[tex] x+y = 30[/tex] (1)
[tex] 1.95x+ 2.85y = 78.30[/tex] (2)
From equation (1) we can solve for x and we got:
[tex] x = 30-y[/tex] (3)
Replacing (3) into (2) we got:
[tex] 1.95(30-y) +2.85 y = 78.30[/tex]
And solving for y we got:
[tex] 58.5 -1.95 y +2.85 y = 78.30[/tex]
[tex] 0.9 y = 19.8[/tex]
[tex] y = 22[/tex]
And then solving for x we got:
[tex] x = 30-22 = 8[/tex]
So then we have 8 donuts and 22 cupcakes
Step-by-step explanation:
Let x the number of donuts and y the number of cupcakes, from the info given we can set up the following equations:
[tex] x+y = 30[/tex] (1)
[tex] 1.95x+ 2.85y = 78.30[/tex] (2)
From equation (1) we can solve for x and we got:
[tex] x = 30-y[/tex] (3)
Replacing (3) into (2) we got:
[tex] 1.95(30-y) +2.85 y = 78.30[/tex]
And solving for y we got:
[tex] 58.5 -1.95 y +2.85 y = 78.30[/tex]
[tex] 0.9 y = 19.8[/tex]
[tex] y = 22[/tex]
And then solving for x we got:
[tex] x = 30-22 = 8[/tex]
So then we have 8 donuts and 22 cupcakes
Help me !!! Which point in this body of water is most ikely to be in the photic zone
O A. Point A
B. Point
C. Pointe
D. Point
SUBMIT
Answers
Answer:
A
A has sufficient sunlight, it's also close to some vegetation, it's the perfect place.
Answer:
It is Point B not Point A
Step-by-step explanation:
i have done the test a little bit ago.
On January 1, it was worth $8,474. On March 1, it was worth $3,323. During February, it decreased by $1,621. During January it decreased by
Answers
Answer:
Step-by-step explanation:
Gas prices are up 30% since last year when they were $4.35, how much is gas now?
Express your answer rounded correctly to the nearest cent.
Answers
Answer:
$5.66/gal
Step-by-step explanation:
To calculate the current price of gas, multiply $4.35/gal by (1 + 0.30), or by 1.30:
1.30($4.35/gal) = $5.66/gal
find the slope of (2, 2) and (-2, -2) choices are 4, 2 and 1
Answers
Answer:
1
Step-by-step explanation:
We can find the slope by using
m = (y2-y1)/(x2-x1)
= (-2-2)/(-2 -2)
=-4/-4
=1
Answer:
Your answer would be 1
Step-by-step explanation:
Slope formula = y2-y1/x2-x1
x1y1=2,2 and x2y2=-2,-2
Plug the values in:
= -2-2/-2-2 = -4/-4 = 1
The base of a regular pyramid is a hexagon.
The figure shows a regular hexagon with center C. An apothem is shown as a dashed segment perpendicular to an edge and is labeled as a. A dashed line segment joins the center with the left vertex of the edge perpendicular to the apothem. This segment has a length of 8 centimeters. The angle formed by the edge and the segment measures 60 degrees.
What is the area of the base of the pyramid?
Enter your answer in the box. Express your answer in radical form.
Answers
Answer:
[tex]216\sqrt{3}[/tex] [tex]cm^{2}[/tex]
Step-by-step explanation:
Length of edge:
[tex]12[/tex]
Length of apothem:
[tex]\frac{\sqrt{3}}{2}*12[/tex]
[tex]6\sqrt{3}[/tex]
3 × Length of edge × Length of apothem:
[tex]3*12*6\sqrt{3}[/tex]
[tex]216\sqrt{3}[/tex]
The answer is 96√3 cm²
The health insurance company that insured Peter pays 80% of nutritional counseling after Peter pays a $50 deductible the cost of the counseling was $1,060
Answers
Answer:
Peter will pay:
$50 deductible20% x ($1,060 - $50) = $202total $252the insurance company will pay:
(total counseling cost - deductible) x 80% = ($1,060 - $50) x 80% = $808The deductible refers to the amount of money an insured has to pay before the health insurance company starts to pay partially or completely for your health treatment. deductibles are commonly used for other types of insurance policies also, including auto insurance.
Answer:
$252
Step-by-step explanation:
edge 2022
Suppose that in a certain sinkhole the ground dropped 76.8 ft in 24 hour. Find the unit rate representing the change in altitude per hour
Answers
Answer:i dont know
Step-by-step explanation:
Can someone help me with these problems S and T
Answers
Answer:
S) 230°
T) 45°
Step-by-step explanation:
S) m∠RST = 30°. An inscribed angle is half the central angle, so RT = 60°.
SR = 70°, so ST = SR + RT = 60° + 70° = 130°.
SPT = 360° − ST = 360° − 130° = 230°
T) m∠DCA = 60°. An inscribed angle is half the central angle, so AD = 120°.
DB = AD − BA = 120° − 75° = 45°
What is Surface Area?
A>The total space inside a figure.
B>The sum of all the area's of the faces on a figure.
Answers
Answer:
B
Step-by-step explanation:
Option A is volume, which is the total space inside a object
Option B refers to the sum of area of planes on the exterior of an object only.
Refer to picture attached for a clearer visual.
What’s the correct answer for this?
Answers
Answer:
MN = 48
Step-by-step explanation:
Since AB is a diameter , so it divides MN into 2 equal parts i.e. MO = NO
7x-4 = 6x
7x-6x = 4
x = 4
Now
MN = MO + NO
MN = 7x-4+6x
MN = 7(4)-4+6(4)
MN = 28-4+24
MN = 48
Answer:
48
Step-by-step explanation:
Since AB is a diameter, MO = NO
7x - 4 = 6x
7x - 6x = 4
= 4
MN = MO + NO
= 7x - 4 + 6x
= 7 * 4 - 4 + (6 * 4)
= 28 - 4 + 24
= 48
Hope this helps!
this is my question yeyeyeyeyeyeyyeyyeyeyeyeeyye
Answers
Answer:
yeyeyeyeyeyeyeyeyeye
