26. A hamburger chain has, over a period, sold a certain hamburger, macburger, b

Question

26. A hamburger chain has, over a period, sold a certain hamburger, macburger, below cost price. The idea is that this burger will attract more customers, and that the increase in customers will result in an increase in the sale of other products, thereby increasing total profits. Some restaurant managers however, claim that this marketing campaign is having a negative effect on their profits. The analysis department has decided to study this closer for a certain week of sales. The model they use is: profit,-B + B.number, + B,number +B, Innumber, +u, where profit is the profit relative capital (measured in %) at restaurant i and number is Page 7 of 11 the number of macburgers sold that week. One of the hypotheses the analysis department wish to study is whether the number of macburgers sold has any effect on the profit at all. What would the null hypothesis be for this test? a) B20 b) B, 0 c) B,0 d) B, -0 and B,-0 and B4-0

Explanation / Answer

ans 26. The null hypothesis for this test would be option (d) B2=0 B3=0 and B4=0.

ans 27.(e) i prefer not to answer this questions

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