3 Question 4 (1 point)

Ordinary least squares is used to estimate a linear relationship between a firm's total revenue per week (in thousands of dollars) and the average percentage discount from list price allowed to customers by salespeople. The estimated slope coefficient on the average percentage discount independent variable is 1.31. The 95 percent confidence interval on the estimated slope coefficient is calculated from the regression output. The interval ranges from -0.89 to 1.78 Based on this result, the researcher

Question 4 options:

a)	can conclude that the slope is significantly different from zero at the 5 percent level of significance.

b)	can be 95 percent confident that the effect of a 1 percent increase in the average price discount will increase weekly total revenue by between $890 and $1,780.

c)	can NOT conclude that the slope is significantly different from zero at the 5 percent level of significance.

d)	All of the above are correct