Q1) Regression equation Credits=15.4-.07 Work was fitted from sample of 21 students. Credits are number of college credits taken and Work is number of hours worked per week at outside job.

Required:

a) Select the correct statement. Increase in number of hours worked per week increases the expected number of credits.

An increase in the number of hours worked per week decreases expected number of credits.

Decrease in number of hours worked per week decreases expected number of credits.

b) Select the right option.

Intercept is meaningful as student may not have job outside school.

Intercept is not meaningful as student who works outside may not earn any credits.

c) If Work = 0 then Credits = Error! Not valid embedded object.

If Work = 40 then Credits = Error! Not valid embedded object.