Answer to Question #158481 in Statistics and Probability for Ali

Question

A fast-food chain decided to carry out an experiment to assess the influence of advertising expenditure on sales. Different relative changes in advertising expenditure, compared to the previous year, were made in eight regions of the country, and resulting changes in sales levels were observed the accompanying table shows the results.

 

Increase in advertising expenditure (%)

0

5

15

20

25

30

35

40

Increase in sales (%)

5

10

18

25

35

50

60

65

Answer 1

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