Question 4: (Please assist in helping me with these questions which I need to check my own answers against) A recent study of 25 students showed that...

Question 4: (Please assist in helping me with these questions which I need to check my own answers against)

A recent study of 25 students showed that they spent an average of $18.56 on gasoline with a standard deviation of $2.80.

Find a 90% confidence interval for the population mean in interval notation.

A. 18.56 ± 0.958

B. (16.994, 20.126)

C. 18.56 ± 1.156

D. (17.602, 19.518)

E. 18.56 ± 1.024

Please follow all rules of thumb, use info provided and clearly state your confident answer in which I can use to see if I am on the right track.

Thank you for your time, effort and assistance

Josh Lowes