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