Question

In a simple linear regression analysis attempting to link lottery sales (y) to jackpot amount (x), the following data are available:

x	y
jackpot ($millions)	Sales (millions)
12	60
14	70
6	40
8	50

The slope (b) of the estimated regression equation here is 3.5. The intercept (a) is 20. Produce the 95% confidence interval estimate of the population slope, β, and report the upper bound for the interval.

a)5.02

b)4.66

c)7.23

d)3.72

Answer 1