With reference to exercise 11.6 compute: a 95% confidence interval for β_0. a 95% ci for β_1 a 95% ci for the mean shear resistance when x = 24.5 a 95% prediction interval for a single predicted value of the shear resistance when x = 24.5

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

i hope this is what you were looking for.

see attached graph