Suppose, for a random sample selected from a normally distributed population,x=57.70ands=8.3.

Round your answers to 2 decimal places.

a.Construct a 95% confidence interval forassumingn= 16.

to

b.Construct a 90% confidence interval forassumingn= 16.

to

Is the width of the 90% confidence interval smaller than the width of the 95% confidence interval calculated in part a?

Yes or No.?

c.Find a 95% confidence interval forassumingn= 25.

to

Is the width of the 95% confidence interval forwithn= 25 smaller than the width of the 95% confidence interval forwithn= 16calculated in part a?

Yes or No.?