Use the .05 significance level and the six-step hypothesis-testing process to check if there is a difference in the mean flight times among the three airlines.
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Write the following five steps of hypothesis test:
1. Set a set of hypotheses
2. Determine rejection rule with a given a (Fa).
3. Compute test statistic (F-Value)
4. Make judgment
5. Interpretation with p-value
Utilize excel output to conduct your answers.
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- What is meant by the sample space of an experiment?List the sample space of each experiment. Tossing three coinsAccording to the National Highway and Traffic Safety Administration, the proportion of fatal traffic accidents in the United States in which the driver had a positive blood alcohol concentration (BAC) is .36. Suppose a random sample of 105 traffic fatalities in the state of Hawaii results in 51 that involved a positive BAC. D) Check whether the conditions for hypothesis testing using the P-value approach are meet.
- Since the instant replay system for tennis was introduced at a major tournament, men challenged 1427 referee calls, with the result that 415 of the calls were overturned. Women challenged 739 referee calls, and 229 of the calls were overturned. Use a 0.01 significance level to test the claim that men and women.m have equal success in challenging calls. What is the conclusion based on the hypothesis test? 1) The P-value is ________ Less than or greater than ? 2) The significance level of a= 0.01, so _______ the null hypothesis. fail to reject or rejection? 3) There ______evidence to warrant rejection of the claim that women and men have equal success in challenging calls is sufficient or is not sufficient?In a study of 800 randomly selected medical malpractice lawsuits, it was found that 515 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? A. H0: p=0.5 H1: p>0.5 B. H0: p=0.5 H1: p<0.5 C. H0: p>0.5 H1: p=0.5 D. H0: p=0.5 H1: p≠0.5 E. H0: p<0.5 H1: p=0.5 F. H0: p≠0.5 H1: p=0.5In a study of 822 randomly selected medical malpractice lawsuits, it was found that 472 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? A. H0: p<0.5 H1: p=0.5 B. H0: p=0.5 H1: p<0.5 C. H0: p=0.5 H1: p>0.5 D. H0: p=0.5 H1: p≠0.5 E. H0: p>0.5 H1: p=0.5 F. H0: p≠0.5 H1: p=0.5 What is the test statistic? z=nothing (Round to two decimal places as needed.) What is the P-value? P-value=nothing (Round to three decimal places as needed.) What is the conclusion about the null hypothesis? A. Reject the null hypothesis because the P-value is less than or equal to the significance level, α. B. Fail to reject the null hypothesis because the P-value is greater than the significance level, α. C. Fail to reject the null hypothesis…
- In a study of 817 randomly selected medical malpractice lawsuits, it was found that 495 of them were dropped or dismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? A. H0: p=0.5 H1: p≠0.5 B. H0: p=0.5 H1: p>0.5 C. H0: p=0.5 H1: p<0.5 D. H0: p<0.5 H1: p=0.5 E. H0: p>0.5 H1: p=0.5 F. H0: p≠0.5 H1: p=0.5 What is the test statistic? z=nothing (Round to two decimal places as needed.) What is the P- P-value= (Round to three decimal places as needed.)In a study of 786 randomly selected medical malpractice lawsuits, it was found that 484 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? A. H0: p≠0.5 H1: p=0.5 B. H0: p=0.5 H1: p≠0.5 C. H0: p=0.5 H1: p>0.5 D. H0: p<0.5 H1: p=0.5 E. H0: p>0.5 H1: p=0.5 F. H0: p=0.5 H1: p<0.5 What is the test statistic? z= (Round to two decimal places as needed.) What is the P-value? P-value=Since an instant replay system for tennis was introduced at a major tournament, men challenged 1410 referee calls, with the result that 424 of the calls were overturned. Women challenged 764 referee calls, and 223 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? Identify the test statistic? Identify the P-value? What is the conclusion based on the hypothesis test? Is there enough evidence? b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is ? <p1−p2< ?. What is the conclusion based on the…
- The administrator of a local hospital has told the governing board that 30% of its emergency room patients are not really in need of emergency treatment. In checking a random sample of 400 emergency room patients, a board member finds that 35% of those treated were not true emergency cases. Using an appropriate hypothesis test and the 0.05 level, evaluate the administrator’s statement.In a recent poll, 810 adults were asked to identify their favorite seat when they fly, and 495 of them chose a window seat. Use a 0.01 significance level to test the claim that the majority of adults prefer window seats when they fly. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Which of the following is the hypothesis test to be conducted? A. H0: p>0.5 H1: p=0.5 B. H0: p≠0.5 H1: p=0.5 C. H0: p=0.5 H1: p>0.5 D. H0: p<0.5 H1: p=0.5 E. H0: p=0.5 H1: p≠0.5 F. H0: p=0.5 H1: p<0.5 What is the test statistic? z= (Round to two decimal places as needed.) What is the P-value? P-value= (Round to four decimal places as needed.) What is the conclusion about the null hypothesis? A. Reject the null hypothesis in favor of the alternative hypothesis because the p-value is greater than…A machine in a factory must be repaired if it produces more than 10% defectives in a day. A random sample of 100 produced items contains 15 defectives, and the supervisor says that the machine must be repaired. Given the aforementioned information and the hypotheses H0: p ≤ 0.1 and H1: p > 0.1, does the sample support the supervisor's decision at the 0.01 significance level?