A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices. Using candy bar sales as the dependent variable, the company will conduct a simple linear regression on the data below:

Final Exam Question-Simple Regression.xlsx

Can we reject the hypothesisthat the slope of the regression line is equal to zero? why?

Significance level = 95%

	a.	Yes,because the p-valuefor the slope is smaller than the significance level
	b.	Yes,because the slope shows a very strong decreasing trend
	c.	Yes,because the confidence interval for the slope does not include zero
	d.	Both a and c are correct