Answered: Use a 0.05 significance level to test…

Use a 0.05 significance level to test the claim that the gender of the tennis player is independent of whether a call is overturned.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Was the Challenge to the Call Successful?
	Yes	No
Men	246	790
Women	351	550

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A 2010 survey asked 823 randomly sampled registered voters in California "Do you support or oppose drilling for oil and natural gas off the coast of California? Or, do you not know enough to say?" The responses were separated based on whether or not the respondent graduated from college. College Graduate Not a College Graduate Support 153 139 Oppose 190 124 Do Not Know 106 111 Total 449 374 (a) Find the following proportions: Pcollege grads; do not know = .23608 Pnoncollege grads; do not know = .29679 (b) Conduct a hypothesis test to determine if this difference is statistically significant (Pcollege grads; do not know Pnoncollege grads; do not know) and - thus determine whether the data provide strong evidence that the proportion of college graduates who do not have an opinion on this issue is different than that of non-college graduates. Test Statistic = P-Value =
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In the hypothesis testing procedure, a is 1 - level of significance. Select one:
A classic story involves four carpooling students who missed a test and gave as an excuse a flat tire. On the makeup test, the instructor asked the students to identify the particular tire that went flat. If they really didn't have a flat tire, would they be able to identify the same tire? A statistician asked 47 other randomly selected students to identify the tire they would select. The results are listed in the accompanying table. Use a 0.05 significance level to test the statistician's claim that the results fit a uniform distribution. What does the result suggest about the likelihood of four students identifying the same tire when they really didn't have a flat? Tire Number Selected Left Front 12 Right Front 8 ... Determine the null and alternative hypotheses. Ho: The tires are selected with the same frequency. H₁: At least one tire has a different frequency than the other tires. Calculate the test statistic, X². x² = (Round to three decimal places as needed.) Left Rear 14 Right…
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Astudy was conducted to determine the proportion of people who dream in black and white instead of color. Among 317 people over the age of 55, 63 dream in black and white, and among 300 people under the age of 25, 17 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dreamn tackand white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and altenative hypotheses for the hypothesis test? OA. Ho P =P2 H, P P2 O B. Ho P1 SP2 H,: P, #P2 O C. Ho P1 #P2 H, P, = P2 O D. H, P1 =P2 H P P2 O E. H, P1 =P2 H,: P,
Among 5,000 items of randomly selected baggage handled by American Airlines, 20 were lost. Among 4,000 items of randomly selected baggage handled by Delta Airlines, 18 were lost. Use a 0.01 significance level to test the claim that both airlines lose the same proportion of baggage. a. Define the parameters A. p 1 equals The proportion of baggage carried by American that arrived on-time p 2 equals The proportion of baggage carried by Delta that arrived on-time B. p 1 equals The proportion of bags selected from American Airlines p 2 equals The proportion of bags selected from Delta Airlines C. p 1 equals The proportion of all baggage lost by American Airlines p 2 equals The proportion of all baggage lost by Delta Airlines D. mu 1 equals The mean number of bags lost by American airlines mu 2 equals The mean number of bags lost by Delta airlines b. State the null and…