Question
Consider the BLKFRI dataset (available in the Data folder on Brightspace). The YEARS column states the number of years each of the 38 individuals in
Consider the BLKFRI dataset (available in the Data folder on Brightspace). The YEARS
column states the number of years each of the 38 individuals in the sample have gone
shopping on Black Friday. We wish to draw inference about the average number of
years consumers have been shopping on Black Friday in the US.
a. Use the sample to find a 95% Confidence Interval for the average number of
years consumers have been shopping on Black Friday in the US.
b. Use the sample to find a 97% Confidence Interval for the average number of
years consumers have been shopping on Black Friday in the US.
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