1. A random sample of eight drivers insured with a company and having similar auto insurance policies was selected. The following table lists their driving experiences (in years) and monthly auto insurance premiums. Driving Еxperience (X): 5 14 19 15 6. 25 16 Monthly Auto (Y) : 64 87 55 71 30 56 42 60 Insurance Premium 2.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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ALL QUESTIONS ARE COMPULSORY|
1. A random sample of eight drivers insured with a company and having similar
auto insurance policies was selected. The following table lists their driving
experiences (in years) and monthly auto insurance premiums.
Driving
Experience
(X): 5
2
14
19
15
6 25
16
Monthly Auto (Y) : 64
87
55
71
30
56
42
60
Insurance Premium
a.
Find the least squares regression line.
b.
Compute the standard deviation of erors.
с.
Test at 10% significance level whether 60 is positive.
d.
Using a = .05, test whether pis positive.
Transcribed Image Text:ALL QUESTIONS ARE COMPULSORY| 1. A random sample of eight drivers insured with a company and having similar auto insurance policies was selected. The following table lists their driving experiences (in years) and monthly auto insurance premiums. Driving Experience (X): 5 2 14 19 15 6 25 16 Monthly Auto (Y) : 64 87 55 71 30 56 42 60 Insurance Premium a. Find the least squares regression line. b. Compute the standard deviation of erors. с. Test at 10% significance level whether 60 is positive. d. Using a = .05, test whether pis positive.
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