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Tems11 [23]
3 years ago
14

A union of restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S.

The union will choose a random sample of wages and then estimate using the mean of the sample. What is the minimum sample size needed in order for the union to be confident that its estimate is within of ? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about .
Mathematics
1 answer:
Mkey [24]3 years ago
5 0

Answer: n = [1.96*2.15/0.35]^2 = 145

Step-by-step explanation:

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Which statement BEST models the equation
Alex777 [14]

Answer:

b A train backed up 7 feet and then moved

forward 7 feet.

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3 years ago
Jace is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. Jace will earn $50
riadik2000 [5.3K]

Answer:

The number of commercials is 340 and the number of movies are 334.

Step-by-step explanation:

Let the number of commercials be = C

    number of movies be = M

According to given conditions:

C = 6 + M    --------- eq1

C + M + 6 = $680 ------ eq2

Putting eq1 in eq2:

6 + M + 6 + M = $680

12 + 2M = $680

Subtracting 12 from both sides:

2M = $680 - 12

2M = 668

Dividing both sides by 2:

M = 668/2

M = 334

For finding number of movies put value of M in eq 1

C = 334 + 6

C = 340

So The number of commercials is 340 and the number of movies are 334.

i hope it will help you!

6 0
3 years ago
The length of the hypotenuse of a 30-60-90 triangle is 11 find the perimeter
lawyer [7]
Work is shown in the photo!
Answer would be 26. 026 is the perimeter

3 0
4 years ago
Read 2 more answers
What is the value of e^ln7 x1<br> 7e<br> 7x<br> 7
stepladder [879]

Answer:

7x

Step-by-step explanation:

Assuming your expression is :

e^{\ln 7x}

Then we simplify as follows

e^{\ln 7x}=e^{\ln x+\ln 7} since \ln A+\ln B=\ln AB

\implies e^{\ln 7x}=e^{\ln x}\times e^{\ln 7} since a^{m+n}=a^m\times a^n

\implies e^{\ln 7x}=x\times7 since e^{\ln a}=a

\implies e^{\ln 7x}=7x

5 0
4 years ago
A company knows that unit cost C and unit revenue R from the production and sale of x units are related by Upper C equals StartF
levacccp [35]

Answer:

$990 per unit.

Step-by-step explanation:

The Unit Cost (C) and Unit Revenue R from the production and sale of x units are related by the function:

C=\dfrac{R^2}{220000} +3221

We are required to find the rate of change of revenue per unit when the cost per unit is changing by $9 and the revenue is ​$1,000.

Rate of Change of C,

\dfrac{dC}{dt}=\dfrac{R}{110000} \dfrac{dR}{dt} \\\dfrac{dC}{dt}=\$9, R=\$1000\\9=\dfrac{1000}{110000} \dfrac{dR}{dt}\\\dfrac{dR}{dt}=9 \div \dfrac{1000}{110000}\\=9 X  \dfrac{110000}{1000}\\\dfrac{dR}{dt}=\$990 $ per unit$

The Revenue is changing at a rate of $990 per unit.

6 0
3 years ago
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