Assume that adults were randomly selected for a poll. They were asked if they​ "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human​ embryos." Of those​ polled, 481 were in​ favor, 399 were​ opposed, and 122 were unsure. A politician claims that people​ don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Exclude the 122 subjects who said that they were​ unsure, and use a 0.05 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Assume that adults were randomly selected for a poll. They were asked if they​ "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human​ embryos." Of those​ polled,
481
were in​ favor,
399
were​ opposed, and
122
were unsure. A politician claims that people​ don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Exclude the
122
subjects who said that they were​ unsure, and use a
0.05
significance level to test the claim that the proportion of subjects who respond in favor is equal to
0.5.
What does the result suggest about the​ politician's claim?
Identify the null and alternative hypotheses for this test. Choose the correct answer below.
 
The test statistic for this hypothesis test is
​(Round to two decimal places as​ needed.)
Identify the​ P-value for this hypothesis test.
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