Mkt Problems Module 4

Richard Joyal
Module 3 Homework
Chapter 4 Problems
Applied decision methids


4-13:

A:)

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B)
Predict the final average of a student who do an 83 on the fist test:
y = 0.7399x + 18.989
y = 0.7399(83) + 18.989
y = 80.40


C)
Give measures of r and r2 for this model. Interpret the value of r2 in the context of the problem:
 r2 = 0.8474
r = sqrt(0.8474) = 0.92054
84% of the departure in the second exam score is explained by the offset exam score.




4-15:
Yes there is a correlation between the first-year test grade and the final average which lead me to believe that the first test grade is usually a untroubled indication of what the students over all performance will be and what their final average will be.

4-17:

Accountants at the firm pedestrian and walker believed that several traveling executives submit unusually advanced travel vouchers when they return from trips. The accounts. took a sample of 200 vouchers submitted put up year they then developed the following multiple relapsing equation relating expected travel cost (Y) to number days on the road (X1) and distance traveled (X2) in millilitres:
y= $90,000+$48.50X1+$0.40X2

The coefficient of correlation computed was 0.68.




A)
If thomas williams returns form a 300 mile trip that took him of of town for 5 days, what is the expected amount that he should claim as expenses?
y= $90+$48.50(5)+$0.40(300)
y = $452.50

B) Williams submitted a reimbursement request for $685 what should the accountant do?

The accountant should calculate a 95% prediction interval for the regression model, and see whether or not $685 falls within it. If not, then the accountant hindquarters be 95% certain that Williams expenses are too high, found on the current model. This does not necessarily mean that Williams has submitted a fraudulent report, as there may be some other common cause.
C.)
One possible variable might intromit a cost-of-living index for the city visited. The model could also be divided into trips that...If you want to get a full essay, inn it on our website: Ordercustompaper.com



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