8. [4/10 Points] DETAILS PREVIOUS ANSWERS ASWESBE9 14.E.047. MY NOTES ASK YOUR TEACHER You may need to use the appropriate technology to answer this question. Suppose data on advertising expenditures and revenue (both in thousands of dollars) for a certain restaurant follow. Advertising Expenditures Revenue 19 N 33 A 43 6 39 10 53 14 53 20 54 (a) Let x equal advertising expenditures (in thousands of dollars) and y equal revenue (in thousands of dollars). Use the method of least squares to develop a straight line approximation of the relationship between the two variables. (Round your numerical values to two decimal places.) y = 29.06 + 1.59x x (b) Test whether revenue and advertising expenditures (both in thousands of dollars) are related at a 0.05 level of significance. (Use the F test.) State the null and alternative hypotheses. OHo: B1 20 Ha: B1