Suppose you want to estimate the mean number of fries that are sold at McDonald's between...
Suppose you want to estimate the mean number of fries that are sold at McDonald's between 11am and noon every day. For 100 days, you found a sample mean of 30 and a sample standard unbiased deviation of 15. Provide a 95% confidence interval for the mean number of fries you wanted to estimate.
Homework Answers
Given : Sample size=100
Sample mean=
Sample standard deviation=s=15
Significance level=
Now , 
; From t-table
Therefore , the 95% confidence interval for the mean number of fries you wanted to estimate is ,
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