Just before the presidential election in November 2020, a local newspaper conducted a poll of registered voters in a very large city and found that 120 out of a random sample of 250 men intended to vote for Donald Trump and 132 out of a random sample of 240 women intended to vote for Donald Trump. Is there convincing evidence that there is a difference in the proportion of all men and the proportion of all women in this city who intended to vote for Trump at the a = 0.05 significance level? (Show all four steps process.) Construct a 95% confidence interval for the difference (men women) in the proportion of all men and the proportion of all women in this city who intended to vote for Trump. Based upon the interval, is there convincing evidence to support the claim that a greater proportion of women than men intended to vote for Trump?

Just before the presidential election in November 2020, a local newspaper conducted a poll of registered voters in a very large city and found that 120 out of a random sample of 250 men intended to vote for Donald Trump and 132 out of a random sample of 240 women intended to vote for Donald Trump. Is there convincing evidence that there is a difference in the proportion of all men and the proportion of all women in this city who intended to vote for Trump at the a = 0.05 significance level? (Show all four steps process.) Construct a 95% confidence interval for the difference (men women) in the proportion of all men and the proportion of all women in this city who intended to vote for Trump. Based upon the interval, is there convincing evidence to support the claim that a greater proportion of women than men intended to vote for Trump?

Name: Just before the presidential election in November 2020, a localnewspa
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Description: Just before the presidential election in November 2020, a localnewspaper conducted a poll of registered voters in a very large cityand found that 120 out of a random sample of 250 men intended tovote for Donald Trump and 132 out of a random sample o

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Problem 1P

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Question

Just before the presidential election in November 2020, a local
newspaper conducted a poll of registered voters in a very large city
and found that 120 out of a random sample of 250 men intended to
vote for Donald Trump and 132 out of a random sample of 240
women intended to vote for Donald Trump.
Is there convincing evidence that there is a difference in the
proportion of all men and the proportion of all women in this city
who intended to vote for Trump at the a = 0.05 significance level?
(Show all four steps process.)
Construct a 95% confidence interval for the difference (men-
women) in the proportion of all men and the proportion of all women
in this city who intended to vote for Trump. Based upon the interval,
is there convincing evidence to support the claim that a greater
proportion of women than men intended to vote for Trump?
Give one way to increase the power of the test other than increasing
the sample sizes. What is a drawback of making that change?
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