A set of wrist watch prices are normally distributed with a mean of 767676 dollars and a standard deviation of 101010 dollars. What proportion of wrist watch prices are between 636363 dollars and 909090 dollars? You may round your answer to four decimal places. S

Answers

Answer 1

Answer:

0.8224

Step-by-step explanation:

Data

mean: $76standard deviation, sd: $10first value of interest, x1: $63second value of interest, x2: $90

z-score for x1:

z1 = (x1 - mean)/sd = (63 - 76)/10 = -1.3

z-score for x2:

z2 = (x2 - mean)/sd = (90 - 76)/10 =  1.4

The  proportion of wrist watch prices are between $63 and $90 is:

P(z1 < z < z2) = P(z < 1.4) - P(z < -1.3)

P(z < 1.4) = 0.9192 (see first picture attached)

P(z < -1.3) = 0.0968 (see second picture attached)

P(z1 < z < z2) = 0.9192 - 0.0968 = 0.8224

A Set Of Wrist Watch Prices Are Normally Distributed With A Mean Of 767676 Dollars And A Standard Deviation
A Set Of Wrist Watch Prices Are Normally Distributed With A Mean Of 767676 Dollars And A Standard Deviation

Related Questions

Renee can see a 25 square foot quilt in 16 hours. Genera can sew the same size quilt in 12 hours. How long would it take them to see the quilt together?

Answers

28 hours because they are too long from each other

Answer:

Approximately 6.86 hours.

Step-by-step explanation:

Renee sews at a rate of 1.5625 sq ft an hour. Found using square feet divided by hours.

Genera sews at a rate of 2.084 sq ft an hour. Found using square feet divided by hours.

To find how fast they can sew the quilt together, we must add their sewing speeds together: 1.5626 + 2.084 = 3.64583333.

Using this equation we can divide a 25 sq ft quilt by their speed of 3.64583333 to get approximately 6.86 hours.

The answer is approximate because we used rounded decimals.

PLS SHOW ALL WORK AND ANSWER CORRECTLY

Answers

Answer:the solution was long so there are 3 pictures hope it helps u

Step-by-step explanation:

The volume of the cone is 540π , work out the height of the cone.
radious = 6cm

Answers

Answer:

14.32

Step-by-step explanation:

The volume of the cone is 540π , work out the height of the cone.

radious = 6cm

Answer:

14.32

Step-by-step explanation:

If f(x) = 3x - 2, find f(4).

Answers

Answer:

10

Step-by-step explanation:

f(x) = 3x - 2

Let x=4

f(4) = 3*4 - 2

      =12-2

       =10

Answer:

10

Step-by-step explanation:

Replace 4 for all the x values and solve

f(4)=3(4)-2

f(4)=12-2

f(4)=10

Which of the following is most likely the next step in the series?

Answers

Answer:

it's D

Step-by-step explanation:

Answer:D
Explanation:

Which graph represents the function f(x) = (1∕4)x – 1?

Answers

Answer:

Where's the graph?

Step-by-step explanation:

Answer:

Step-by-step explanation:

math  way

At 50, Brian sets up an IRA, where he plans to deposit $12,000 at the end of each year until age 75. Find the amount of the annuity if he invests in a stock fund that yields 4% compounded annually.

Answers

Answer: the amount of the annuity is $501000

Step-by-step explanation:

We would apply the future value which is expressed as

FV = C × [{(1 + r)^n - 1}/r]

Where

C represents the yearly payments.

FV represents the amount of money

in your account at the end of 25 years.

r represents the annual rate.

n represents number of years or period.

From the information given,

r = 4% = 4/100 = 0.04

C = $12000

n = 75 - 50 = 25

Therefore,

FV = 12000 × [{(1 + 0.04)^25 - 1}/0.04]

FV = 12000 × [{2.67 - 1}/0.04]

FV = 12000 × 41.75

FV = $501000

what is th rate equivalent to an annual rate of 20% with monthly capitalization​

Answers

Answer:

  about 21.9%

Step-by-step explanation:

The effective annual multiplier is ...

  (1 +r/n)^n = (1 +0.20/12)^12 ≈ 1.21939

The rate equivalent is 1 less than this:

  1.21939 -1 = 0.21939 = 21.939%

Which table shows the function y = -2x + 4?
es

Answers

Answer:

To figure this out you have to plug in values

c

4-5/8(-4)=6.5

4-5/8(2)=2.75

4-5/8(4)=1.5

4-5/8(8)=-1

Step-by-step explanation:

The volume of a cylinder is given by V = ar?h
where ris the radius of the cylinder and his the
height. Which expression represents the volume of
this can?​

Answers

Answer:

D

Step-by-step explanation:

[tex]V=\pi r^{2}h\\ =\pi*(x+2)*(x+2)*3x+8\\ =\pi *x(x+2)+2(x+2)*3x+8\\ =\pi *x^{2}+4x+4*3x+8\\ =3x(x^{2}\pi+4x\pi+4\pi)+8(x^{2}\pi+4x\pi+4\pi0 \\ =3x^{3}\pi+20x^{2}\pi+44x\pi+32[/tex]

13. If 3 times a number minus 2 equals 13, what is the number?
A. 4
old
B. -6
OOOO
C.5
D.2

Answers

Answer:

5

Step-by-step explanation:

Answer:

The number is 5

Step-by-step explanation:

3x -2 = 13

Add 2 to each side

3x-2+2 = 13+2

3x = 15

Divide each side by 3

3x/3 = 15/3

x = 5

Please hurry
Which quadratic function has a vertex of (1, 4) and passes through
the point (0, 3)?

Answers

Answer:

f(x)=−(x−1)^2+4

Step-by-step explanation:

a²=m. Find a⁶

pls help​

Answers

3m, hope this helps!

Answer:

M^3

Step-by-step explanation:

1. What is the median of the data below? 2. What is the value at Q1 (or the lower quartile)?

Answers

Answer:

the median is the middle line

Step-by-step explanation:

Answer:

fkjshfkjdhfjksdhfjkshdfkjshd

Step-by-step explanation:

-6 + 4 i need help plz

Answers

-6+4
The answer is -2

It is less important to account for factors like warranties and durability when purchasing a A: durable goods B: long-term product C:nondurable D: very expensive item PLz answer

Answers

Answer:

the answer is C Non durable

Step-by-step explanation:

AB is included between

A. BC and AC
B. C. < A and D. AB and BC

Answers

Answer:

Option C.

Step-by-step explanation:

By the property of unique triangles (ASA), one side is included between the two angles.

By this property, if included side of the triangle ABC is AB then this side will be included between the two angles A and B.

Therefore, [tex]\bar{AB}[/tex] is included between ∠A and ∠B.

Option C. will be the answer.

Which is the equation in slope-intercept form for the line that passes through (3, 3) and is parallel to x + 3y=4?

Answers

Answer:

hope this is correct

In approximately two to three sentences, explain how you would convert
14/ 25
to a percent

Answers

divide 14 by 25. Then you should get a decimal number. take the decimal number and multiply by 100 and done!


Which equation correctly represents the distance between - 15.1 and -3.9 on a number line?
- 3.9 - (-15.1)] = 11.2
-3.9 - 15.1 = -11.2
|- 15.2 + (-3.9) |= 19
-15.1 - 3.9 = -19

Answers

Answer:

Step-by-step explanation:

Keep in mind that distance is positive, not negative.  Eliminate the negative results.

- 3.9 - (-15.1)] = 11.2 is correct.  -(-15.1) - 3.9 is approximately 15 - 4, or 11, which agrees with the 11.2 correct result.

Find the value of n.

Answers

Answer:

n = -1.5

Step-by-step explanation:

[tex]\frac{1}{(\sqrt2)^{3} } } = 0.353553[/tex]

log ( [tex]2^{n}[/tex] ) = log (.353553)

n = [tex]\frac{log (0.353553) }{log (2)} = -1.5[/tex]

Put the steps in the correct order to show how a budget is made.

First Step

T1 Total up spending

11 Reduce expenses in flexible categories to save or increase savings

Ti Calculate income

Ti Determine if spending is below income

11 Categorize expenses

Final Step

Answers

Answer:

The correct answer is: Calculate income, Total up spending, Categorize expenses, Determine if spending is below income, and Reduce expenses in flexible categories to save or increase savings. When making a budget, it's first necessary to figure out how much money comes in and goes out, and then to compare expenses to income to make cuts if necessary.

Step-by-step explanation:

Nelson decides to invest $1,000,000 in a period annuity that earns 4.8% APR

compounded monthly for a period of 15 years. How many years will it take

Nelson to earn back his initial investment?

Answers

Answer:

21years

Step-by-step explanation:

Amount invested by Nelson = $1,000,000

Interest rate per month = 4.8%

Simple Interest = Principal * Rate * Time/100

simple Interest = $1,000,000 * 4.8 *(1/12)/100

simple Interest = $1,000,000 * 4.8/1200

simple interest = $4,000/ month

Simple interest for one year = $4,000*12 = $48,000

In order to determine the number of years it will take Nelson to earn back his initial investment, we will divide its initial investment by the interest earned on the investment yearly as shown;

amount of years =  $1,000,000/ $48,000

Amount of years = 20.8years ≈ 21years

10.7 years

Step-by-step explanation:

hope this helps

Dose anyone know what is coefficient too -7yz2?

Answers

Answer:

-7

Step-by-step explanation:

Coefficients are the numbers that multiply the following variables, so in the case of -7yz^2, the coefficient would have to be -7.

10. Rhonda Harmon's credit card statement showed an $839.78 balance. Since then, she has made a $110.50 payment
and purchases totaling $143.75. What is Rhonda's new balance?
NEED HELP PLSS

Answers

Answer:

585.53 new balance

$839.78 - 110.50 - 143.75

Answer: 585.53

Step-by-step explanation:

839.78 - 110.50 = 729.28

729.28 - 143.75 = 585.53

Write in simplest form:
4 1/3 : 7

Answers

The simplest form can be 13/3: 7 or 4.3:7

Answer:

13 : 21

Step-by-step explanation:

4 1/3 : 7

13/3 : 7

3*13/3 : 3*7

13 : 21

Please help me answer all parts of this in the next two hours!

Answers

Answer:

1) Yes, table shows a probability distribution

2) Mean = 1.5

3) Standard Deviation = 1.1

Step-by-step explanation:

PART 1:

For the table to show a probability distribution, the sum of all probabilities should be equal to 1

Sum of probabilities = 0.358 + 0.443 + 0.174 + 0.025

Sum of probabilities = 1

Hence, the table shows the probability distribution.

PART 2:

The formula for mean is given by:

Mean = Sum of terms/ Total no. of terms

Mean = (0+1+2+3) / 4

Mean = 1.5

PART 3:

The formula for standard deviation is given by:

[tex]\sigma=\sqrt{\frac{\sum(x_i-\mu)^2}{N}}[/tex]

Solve using a calculator, we get

σ = 1.118

Round off to one decimal place

σ = 1.1

How many 3-digit multiples of 13 are there?

Answers

Answer:

There are 69

Step-by-step explanation:

1+(104-998)/13=69

Given the figure as marked, identify the most specific type of quadrilateral.



Select the best answer from the choices provided.
A.
parallelogram
B.
rhombus
C.
rectangle
D.
square

Answers

Answer:

the answer is c. rectangle

The answer is The rectangle

Find h, assuming the triangles formed are similar.

Answers

Answer:

h=18

Step-by-step explanation:

Answer:

Step-by-step explanation:

Similar triangles, the sides are in proportion

[tex]\frac{20}{8}=\frac{h}{6}\\\\\frac{20}{8}*6=h\\\\5*3=h\\[/tex]

h = 15

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