Answered: Fill in the missing values in the…

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.CR: Chapter Review

Problem 37E: Find the positive geometric mean between 4 and 64.

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Westminster Financial has released a summary of investment package information from the past fiscal year. During this time, Westminster provided a choice among twelve pre-designed investment packages. Westminster classified the packages into three categories according to riskiness. We're interested in the possible relationship between the age of an investor and the riskiness of the investment package she chose. So, there are two variables under consideration: age of Westminster investor ("under 35", "35-49", or "50+") and riskiness of investment choice ("risky", "moderate/mixed", or "conservative").

The contingency table below gives a summary of the information released by Westminster regarding age and riskiness of investment package for a random sample of 150 investors. Each cell of the table contains three numbers: the first number is the observed cell frequency (fO); the second number is the expected cell frequency (fE) under the assumption that there is no relationship between the two variables age of Westminster investor and riskiness of investment choice for this past year; and the third number is the following value.

(Jo-JE)
Fill in the missing values in the contingency table. Round your expected frequencies to two or more decimal places, and round your
values to three
fE
or more decimal places.
Send data to Excel
Riskiness of investment choice
Moderate/
Risky
Conservative
Total
mixed
15
13
7
Under 35
16.80
35
0.860
17
26
17
Age of
35-49
28.80
60
Westminster
investor (in
years)
0.272
18
33
4
50+
18.33
26.40
10.27
55
0.006
1.650
3.828
Total
50
72
28
150

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