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2 years ago

11

Study the data set shown. Then answer the questions below. Enter a number that could be removed from this data set that would no

t change the range.Enter a number that could be removed from this data set that would change the range.

1 answer:

Hunter-Best [27]2 years ago

5 0

Answer:

63 84

Step-by-step explanation:

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Franchise Business Review stated over 50% of all food franchises earn a profit of less than $50,000 a year. In a sample of 130 c

nydimaria [60]

Answer:

We need a sample size of 564.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$\pi = \frac{81}{130} = 0.6231$

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Based upon a 95% confidence interval with a desired margin of error of .04, determine a sample size for restaurants that earn less than $50,000 last year.

We need a sample size of n

n is found when $M = 0.04$

So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.04 = 1.96\sqrt{\frac{0.6231*0.3769}{n}}$

$0.04\sqrt{n} = 1.96\sqrt{0.6231*0.3769}$

$\sqrt{n} = \frac{1.96\sqrt{0.6231*0.3769}}{0.04}$

$(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.6231*0.3769}}{0.04})^{2}$

$n = 563.8$

Rounding up

We need a sample size of 564.

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2 years ago

Calculate the volume of the prism by first finding the total number of half-unit cubes that will fill it. There are 8 half-unit

Tema [17]

Answer: 3

Step-by-step explanation: QPEX VERIFIED JUST DID IT

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2 years ago

What’s the expression 4m - 17 + 3m - 11

Rina8888 [55]

=4m - 17+ 3m - 11
combine like terms
=(4m + 3m) + (-17 - 11)
=7m - 28

This can be factored/simplified by dividing everything by 7
=7(m - 4)

Hope this helps! :)

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2 years ago

Ethan ran 11 miles in 2 hours. What is the unit rate of miles to hour?

Rainbow [258]

Answer:

5.5 mph

Step-by-step explanation:

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2 years ago

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K+2 over 3= -7 <br> How do u solve this problem

harkovskaia [24]

K+2/3=-7
K+2=-7x3
K+2=-21
K=-19

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3 years ago