After a series of tropical storms, prices of many essential items were higher; authorities claim gasoline price gouging. The following table shows the average price (in cents) of a gallon of gasoline after and before the storms.
Find a 95% confidence interval for the mean difference of prices. Round your answer to three decimal places.

Question

After a series of tropical storms, prices of many essential items were higher; authorities claim gasoline price gouging. The following table shows the average price (in cents) of a gallon of gasoline after and before the storms.
  Find a 95% confidence interval for the mean difference of prices. Round your answer to three decimal places.

Quizplus · Accepted Answer

The Answer of After a series of tropical storms, prices of many essential items were higher; authorities claim gasoline price gouging. The following table shows the average price (in cents) of a gallon of gasoline after and before the storms.
  Find a 95% confidence interval for the mean difference of prices. Round your answer to three decimal places.

After a Series of Tropical Storms, Prices of Many Essential