A Survey of 25 Grocery Stores Revealed That the Average

Multiple Choice

A survey of 25 grocery stores revealed that the average price of a 4-litre bag of milk was $2.98 with a standard error of $0.10. What is the 98% confidence interval to estimate the true cost of a 4-litre bag of milk?

A) $2.75 to $3.21
B) $2.85 to $3.11
C) $2.94 to $3.02
D) $2.95 to $3.01
E) $2.77 to $3.19