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  3. a corporation owns several companies. the strategi

A corporation owns several companies. The strategic planner for the corporation believes amount spent on advertising...

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Statistics

  1. A corporation owns several companies. The strategic planner forthe corporation believes amount spent on advertising can to someextent be a predictor of total sales. As an aid in long termplanning, she gathers the following sales and advertisinginformation from several of the companies in millions for the year2019.

Advertising

12.5

3.7

21.6

60.0

37.6

6.1

16.8

41.2

Sales

148

55

338

994

541

89

126

379

  1. Develop the equation of the simple regression line to predictsales on advertising expenditures using thesedata.                                                                                                             [10 Marks]
  2. Find out the sales that are likely to be attained whenadvertising expenditure is 25

million.                                                                                                          [2 Marks]

  1. Compute the coefficient of correlation and coefficient ofdetermination and interpret their values. [4 Marks]
  2. Test the hypothesis that the population correlation coefficientis zero at 5% level of significance. [4 Marks]

Answer & Explanation Solved by verified expert
4.0 Ratings (448 Votes)
Solution1 simple regression line isY    See Answer
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