a. To compute the confidence interval use a ? z t Correct distribution. b. With 90% confidence the population mean number of visits per week is between and visits. c. If many groups of 221 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of visits per week and about percent will not contain the true population mean number of visits per week.
A fitness center is interested in finding a 90% confidence interval for the
a. To compute the confidence interval use a ? z t Correct distribution.
b. With 90% confidence the population mean number of visits per week is between and visits.
c. If many groups of 221 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of visits per week and about percent will not contain the true population mean number of visits per week.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images