QUESTION 7 Sales of America sells copiers to businesses of all szes throughout t

Question

QUESTION 7 Sales of America sells copiers to businesses of all szes throughout the United States and Canada. Ms. Agril Smth was recenty sales representatives from all over the country wil be in attendance calls made each day and the number of copiers sold. Ms. Smith then runs a regression equation is y 18.9476+1.1842X promoted to the position of national sales manager. At the upcoming sales meeting She would like to impress on them the importance of making that extra sales call each day She collects information about the number of sales with the number of sales as the dependent variable and the number of calls as the independent variable. The regression If a sales person makes FIVE extra calls per day,on average, the number of copiers sold will increase by O a.6 COPICTs o b.5 Oc.19 QUESTION 8 want to predict the daily sales (5) for your conveniance stores based on median income in the local area and the area of the store. You get tye foloaing regression output What is the equation? o a.y-1930+ 25x1-35x2 by535+1930x1+ 25%2 O c.y 1930+ 25x+5.35x o d You can't get the equation from this output because daily sales isnt one of the variables

Explanation / Answer

QUestion 7 here regression line

y^ = 18.9476 + 1.1842x

so here the change in x is five units lets say it changed to x+ 5

so y^ (new) = 18.9476 + 1.1842 * (x + 5) = 18.9476 + 1.1842x + 5.921

so there is approximatley 6 points increase. Option A is correct.

QUestion 8

Here the equation is

y^ = 1930 + 0.25x1 - 5.35 x2

Option A is correct.

Question 9

As income coefficient is negative that means that means that low income people purchase at convenience store more than high income people do. So, yes results are consistent with the analogy.

Question 11

The answer is "discriptive statistics" which tells us about mean, mode and median with interquartile range.

Question 12

Option C is correct as standard deviation divided by mean is more than 0.5

Question 13

(a) Option A is correct : Paired t data test for mean as same 15 families are used to contact two companies.

Question 14

Y = 2.3 X + 10

Here X is increased by 1000, so Y will be increased by 2.3 * 1000 = $ 2300

Option B is correcct.

Question 15

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