Hypothesis Testing for Two Proportions Preform a hypothesis test on a separate sheet of paper Nathan claims that the proportion of all males who locked themselves out of their cars is less than the proportion of all females who locked themselves out of their cars in the last five years. Nathan found that 135 out of 300 randomly selected males had locked themselves out of their car within the last five years. He also found that 220 out of 400 randomly selected females had locked themselves out of their car within the last five years. Test Nathan's claim at the 1% significance level.
Hypothesis Testing for Two Proportions Preform a hypothesis test on a separate sheet of paper Nathan claims that the proportion of all males who locked themselves out of their cars is less than the proportion of all females who locked themselves out of their cars in the last five years. Nathan found that 135 out of 300 randomly selected males had locked themselves out of their car within the last five years. He also found that 220 out of 400 randomly selected females had locked themselves out of their car within the last five years. Test Nathan's claim at the 1% significance level.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:Hypothesis Testing for Two Proportions
Preform a hypothesis test on a separate sheet of paper
Nathan claims that the proportion of all males who locked themselves out of their car
is less than the proportion of all females who locked themselves out of their cars in the
last five years. Nathan found that 135 out of 300 randomly selected males had locked
themselves out of their car within the last five years. He also found that 220 out of 400
randomly selected females had locked themselves out of their car within the last five
years. Test Nathan's claim at the 1% significance level.
s
The creator of the Drug A wants to know if the proportions of headaches that result
from taking Drug A differ between men and women. He administers Drug A to 200 men
and to 150 women. His findings are summarized in the table. Test whether the proportion
of men who got a headache was different that the proportion of women who got a
headache when both took Drug A when a =
0.01.
Number who experience a headache
Men
100
Women
90
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