Question

Check the requirements for confidence intervals using the following information: suppose we want to estimate the...

Check the requirements for confidence intervals using the following information:

suppose we want to estimate the mean number of concerts that rock bands schedule every year. A random sample of 75 rock bands finds a mean sample of 38 scheduled concerts every year. with this information, you plan to create a 95% confidence interval for the true mean number of concerts rock bands schedule every year

conditions
1. the method of sampling :

a. can be safely assumed to be random
b. is stated to be random
c. is not random


2. the sample size is :

a. large enough, since 75>_10
b. large enough since 18.72>_ 10
c. large enough since 75>_ 30
d. large enough since 39>_30

3. the sample is

a. less than 5% of all rock bands, therefor the sample can be assumed to be independent
b. less than 5% of all rock bands, therefore the sample can not be assumed to be independent
c. more than 5% of all rock babds, therefore the sample can not be assumed independent
d more than 5% of all rock bands, therefore the sample can be assumed to be independent

because of our answrred from the 3 conditions above , we
a. have met the requirements to construct a 95% confidence interval
b have not net the requirements to construct a 95% confidence interval

Homework Answers

Answer #1

1. the method of sampling :

b. is stated to be random

2. the sample size is :

c. large enough since 75>_ 30

3. the sample is

a. less than 5% of all rock bands, therefor the sample can be assumed to be independent

because of our answered from the 3 conditions above , we

a. have met the requirements to construct a 95% confidence interval

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