A study of external disk drives finds the following
Capacity (n GB) Price (in $)
60 $27.95
140 $36.00
250 50.95
320 69.50
800 95.00
1500 199.00
4000 459.00
X = 1010.00
Y = 133.91
Sd(x) = 1410.52
sd (y) = 154.53 the leas squares line was found to be price=23.47 + 0.109 Capacity with Se= 10.24 and SE(B1)= .0030
a) Find the predicted Price of a 800GB hard drive
b) Find the 95% confidence interval for the mean price of all 800GB disk drives
c) Find the 95% prediction interval for the price of a 800gb hard drive