Question
A local grocery store wants to estimate the mean daily number of gallons of milk sold...
A local grocery store wants to estimate the mean daily number of
gallons of milk sold to customers. Assume the number of gallons
sold follows the normal distribution, with a population standard
deviation of 1.9 gallons. A random sample of 70 days shows that the
mean daily number of gallons sold is 15.50.
A. Compute a 90% confidence interval for the population mean.
B. This local grocery store is looking to find evidence to
contradict the claim that the average number of gallons of milk
sold so does not exceed 10. Conduct a hypothesis test for the
grocery store clerk (alpha=0.03).
Homework Answers
Answer #1
Given:
= 1.9
n = 70
= 15.50
Significance level, 
Therefore
there is sufficient evidence to conclude that the average number of
gallons of milk sold so does not exceed 10.
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