study of external disk drives finds the following.

Capacity(in GB)

80

120

250

320

800

1500

4000

x=1010.00

SD(x)=1410.38

Price(in $)

27.95

36.00

50.95

64.95

89.00

205.00

439.00

y=130.41

SD(y)=148.61

The least squares line was found to be

Price=24.39+0.105Capacity with se=14.23 and SEb1=0.0041. Complete parts a through c below.

a) Find the predicted Price of a 800 GB hard drive.

The predicted Price of a 800 GB hard drive is $

(Round to two decimal places asneeded.)

b) Find the95% confidence interval for the mean Price of all 800 GB disk drives.

( , )

(Round to two decimal places as needed. Do not include the$ symbol in youranswer.)

c) Find the95% prediction interval for the Price of a 800 GB hard drive.

( , )

(Round to two decimal places as needed. Do not include the$ symbol in youranswer.)