x 3,12,6,20,14
y 55,40, 55,10,15
a) compute an estimate of the standard deviation of ^y when x=8
b) develop a 95% confidence interval for the expected value of y when x=8
c) estimate the standard deviation of an individual value of y when x=8
d) develop a 95% prediction interval for y when x=8

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    • stndrd__interval.pdf