MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Maryland, as the four U.S. cities with the highest percentage of millionaires (Kiplinger website). Consider a sample of data that show the
following number of millionaires for samples of individuals from each of the four cities.
Millionaire
Cannot conclude
Bridgeport,
CT
CA
San Jose,
CA
Yes
42
36
No
458
264
a. What is the estimate of the percentage of millionaires in each of these cities (to 1 decimal)?
0.436
Use Table 3 of Appendix B to find the p-value.
The p-value is greater than 0.10
What is your conclusion?
City
Washington,
D.C.
35
365
Bridgeport, San Jose, Washington, Lexington Park,
CT
D.C.
MD
Lexington Park,
46
27.4
Percentage, %
36.5
b. Using a = 0.05 level of significance, test for the equality of the population proportion of millionaires for these four cities. What is the p-value?
Compute the value of the x² test statistic (to 3 decimals).
36.5
MD
33
367
that there is a difference among the population proportion of millionaires for these four cities.
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Transcribed Image Text:Maryland, as the four U.S. cities with the highest percentage of millionaires (Kiplinger website). Consider a sample of data that show the following number of millionaires for samples of individuals from each of the four cities. Millionaire Cannot conclude Bridgeport, CT CA San Jose, CA Yes 42 36 No 458 264 a. What is the estimate of the percentage of millionaires in each of these cities (to 1 decimal)? 0.436 Use Table 3 of Appendix B to find the p-value. The p-value is greater than 0.10 What is your conclusion? City Washington, D.C. 35 365 Bridgeport, San Jose, Washington, Lexington Park, CT D.C. MD Lexington Park, 46 27.4 Percentage, % 36.5 b. Using a = 0.05 level of significance, test for the equality of the population proportion of millionaires for these four cities. What is the p-value? Compute the value of the x² test statistic (to 3 decimals). 36.5 MD 33 367 that there is a difference among the population proportion of millionaires for these four cities.
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