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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 13PT

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A researcher wishes to test if the proportions of users of foreign and
native cars among residence of two neighboring cities differ. In order to
test, the researcher considers two samples from two cities. In one city, 75
out of 185 randomly selected residence reported to own foreign cars,
whereas in the other city, 68 out of 195 randomly selected residence
reported to have native cars.
The researcher wishes to test Ho: P₁=p2 against Ha: P₁ P2.
The value of the test statistic z is

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