A survey of 144 retail stores revealed that the average price of a DVD was $375 with a standard error of $20. What is the 95% confidence interval to estimate the true cost of the DVD?
A) $323.40 to $426.60
B) $328.40 to $421.60
C) $335.00 to $415.00
D) $335.80 to $414.20

Question

Quizplus · Accepted Answer

The Answer of A survey of 144 retail stores revealed that the average price of a DVD was $375 with a standard error of $20. What is the 95% confidence interval to estimate the true cost of the DVD?
A) $323.40 to $426.60
B) $328.40 to $421.60
C) $335.00 to $415.00
D) $335.80 to $414.20

A Survey of 144 Retail Stores Revealed That the Average