A partial and unofficial list of voters who registered for an upcoming election in a large city specifies that the proportion of physically-able voters is more than the proportion of those who have disabilities. Two officials have been dispatched, who selected random samples of 436 and 712, respectively. It was found that out of 436, 409 were able voters, while 624 out of 712 were physically disabled. At 2% significance level, is there sufficient evidence to reject the claim? Use the p-value method.
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- A partial and unofficial list of voters who registered for an upcoming election in a large city specifies that the proportion of physically-able voters is more than the proportion of those who have disabilities. Two officials have been dispatched, who selected random samples of 436 and 712, respectively. It was found that out of 436, 409 were able voters, while 624 out of 712 were physically disabled. At 2% significance level, is there sufficient evidence to reject the claim? Use the p-value method.
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- What is meant by the sample space of an experiment?Independent random samples of 27 people living on the west side of a city and 26 people living on the east side of a city were taken to determine if the income levels of west side residents are less than the income levels of east side residents. Given the testing statistics below, determine if the data provides sufficient evidence to conclude that the income levels of west side residents are less than the income levels of east side residents, at the 4% significance levelSince an instant replay system for tennis was introduced at a major tournament, men challenged 1394 referee calls, with the result that 425 of the calls were overturned. Women challenged 751 referee calls, and 229 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging calls. Identify the test statistic and the p - value.
- A small private college is interested in determining the percentage of its students who live off campus and drive to class. It is claimed that less than 20% of their current students live off campus and drive to class. The college decided to take a random sample of 108 of their current students to use in the analysis. It was found that 14 of those live off campus and drive to class. Is therre enought evidence to support the claim that less than 20% of students live off campus at the 3% level of significance?Since an instant replay system for tennis was introduced at a major tournament, men challenged 1403 referee calls, with the result that 417 of the calls were overturned. Women challenged 741 refereecalls, and 215 of the calls were overturned. Use a 0.01 significance level to test the claim that men and women have equal success in challenging calls.In a nationally representative sample of 1,668 adult Americans, 510 indicated that they had checked their credit score within the last 12 months. Suppose of the 510 people that had checked their credit report within the last 12 months, 39% had done so as part of their regular financial planning. Does this provide convincing evidence that more than one-third of adult Americans who have checked their credit scores within the past 12 months did so as part of regular financial planning? Carry out a test using a significance level of 0.01. Find the test statistic and P-value. (Use a table or SALT. Round your test statistic to two decimal places and your P-value to four decimal places.) z=P-value= State the conclusion in the problem context. Fail to reject H0. We have convincing evidence that more than one-third of adult Americans who have checked their credit scores within the past 12 months did so as part of regular financial planning.Fail to reject H0. We do not have convincing evidence…
- Since an instant replay system for tennis was introduced at a major tournament, men challenged 1407 referee calls, with the result that 429 of the calls were overturned. Women challenged 775 referee calls, and 220 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging calls. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of male tennis players who challenged referee calls and the second sample to be the sample of female tennis players who challenged referee calls. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1≠p2 H1: p1=p2 B. H0: p1=p2 H1: p1≠p2 C. H0: p1≤p2 H1: p1≠p2 D. H0: p1=p2 H1: p1>p2 E. H0: p1=p2 H1: p1<p2 F. H0: p1≥p2 H1: p1≠p2 Identify the test statistic. z=. 16.16 (Round to two decimal places…Since an instant replay system for tennis was introduced at a major tournament, men challenged 1407 referee calls, with the result that 429 of the calls were overturned. Women challenged 775 referee calls, and 220 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging calls. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of male tennis players who challenged referee calls and the second sample to be the sample of female tennis players who challenged referee calls. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1≠p2 H1: p1=p2 B. H0: p1=p2 H1: p1≠p2 C. H0: p1≤p2 H1: p1≠p2 D. H0: p1=p2 H1: p1>p2 E. H0: p1=p2 H1: p1<p2 F. H0: p1≥p2 H1: p1≠p2 Identify the test statistic. z=nothing (Round to two decimal…A computer manufacturer believes that the proportion of hardware malfunctions is different in humid climates than in dry climates. To test this claim, the manufacturer takes a random sample of 400 machines sold in Florida (humid) and 400 machines sold in Arizona (dry). The manufacturer finds that 44 of the machines in Florida and 24 of the machines in Arizona had hardware malfunctions. 1.Compute the p-value. 2. Does the evidence support the computer manufacturer's claim at the 10% significance level?
- Since an instant replay system for tennis was introduced at a major tournament, men challenged 1408 referee calls, with the result that 411 of the calls were overturned. Women challenged 743 referee calls, and 217 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging calls.Since an instant replay system for tennis was introduced at a major tournament, men challenged 1407 referee calls, with the result that 425 of the calls were overturned. Women challenged 771 referee calls, and 213 of the calls were overturned. Use a 0.01 significance level to test the claim that men and women have equal success in challenging calls. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of male tennis players who challenged referee calls and the second sample to be the sample of female tennis players who challenged referee calls. What are the null and alternative hypotheses for the hypothesis test? A. Upper H 0 : p 1 equalsp 2 Upper H 1 : p 1 not equalsp 2 B. Upper H 0 : p 1 not equalsp 2 Upper H 1 : p 1 equalsp 2 C. Upper H 0 : p 1 greater than or equalsp 2 Upper H 1 : p 1 not equalsp 2 D. Upper H 0 : p 1…In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective. What is the null hypothesis? What is the decision rule? What is the test statistic? What is the p-value? What is the conclusion?