### We are testing a new ford focus horsepower ratings of 14 engines produced at a ford plant have a mean of 126 with a standard deviation of ( 11 . ) a) Find a 95% confidence interval for the actual horsepower ratings of the engines. b) Give the interpretation of your confidence interval found in (a) c) Find a ( 90 % ) prediction interval for the

We are testing a new ford focus horsepower ratings of 14 engines produced at a ford plant have a mean of 126 with a standard deviation of ( 11 . ) a) Find a 95% confidence interval for the actual horsepower ratings of the engines. b) Give the interpretation of your confidence interval found in (a) c) Find a ( 90 % ) prediction interval for the