A fitness center is interested in finding a 98% confidenceinterval for the mean number of days per week thatAmericans who are members of a fitness club go to theirfitness center. Records of 239 members were looked at andtheir mean number of visits per week was 3.2 and thestandard deviation was 1.6.a. To compute the confidence interval use a ? ✓distribution.b. With 98% confidence the population mean number ofvisits per week is betweenandvisits.c. If many groups of 239 randomly selected members arestudied, then a different confidence interval would beproduced from each group. Aboutpercent ofthese confidence intervals will contain the true populationmean number of visits per week and aboutpercent will not contain the true population mean number ofvisits per week.

Sample size(n)=239 sample mean(x¯)=3.2 Standard deviation(s)=1.6

Answered: A fitness center is interested in…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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