A fitness center is interested in finding a 90% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 220 members were looked at and their mean number of visits per week was 2.4 and the standard deviation was 2.1. Round your answers to four decimal places. A. The sampling distribution follows a B. With 90% confidence the population mean number of visits per week is between and distribution. visits.
A fitness center is interested in finding a 90% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 220 members were looked at and their mean number of visits per week was 2.4 and the standard deviation was 2.1. Round your answers to four decimal places. A. The sampling distribution follows a B. With 90% confidence the population mean number of visits per week is between and distribution. visits.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:C. If many groups of 220 randomly selected members are studied, then
a different confidence interval would be produced from each group.
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
About
number of visits per week.
Σ
th
SAMSUNG

Transcribed Image Text:A fitness center is interested in finding a 90% confidence interval for
the mean number of days per week that Americans who are members
of a fitness club go to their fitness center. Records of 220 members
were looked at and their mean number of visits per week was 2.4 and
the standard deviation was 2.1.
Round your answers to four decimal places.
A. The sampling distribution follows a
B. With 90% confidence the population mean number of visits per
week is between
and
distribution.
M
visits.
th
0
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