Question

We all typically go to the shortest line in the grocery store. Data were collected on the number of carts ahead in line and the total time to check out (minutes), including time in line, on five occasions.

number of charts	1 2 3 4 5
time to check out	5 11 9 14 16

a)Contruct %90 confidence inerval for β1.

b)Calculate the LS estimators ˆ β0 and ˆ β1.

c)Estimate the error variance ˆ σ2.

d)Test H0 : β1 = 0 versus H1 : β1 6= 0 using α = 0.05.

e)Draw the ANOVA table and comment on it.

f)Calculate the coefficient of determination and comment on it.

Answer 1