Since an instant replay system for tennis was introduced at a major tournament, men challenged 1437 referee calls, with the result that 422 of the calls were overturned. Women challenged 753 referee calls, and 210 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. What is the conclusion based on the hypothesis test? The P-value is the significance level of a = 0.05, so and men have equal success in challenging calls. b. Test the claim by constructing an appropriate confidence interval. The 95% confidence interval is < (P₁-P2) <- (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? (... the null hypothesis. There evidence to warrant rejection of the claim that women ▼0, there Because the confidence interval limits warrant rejection of the claim that men and women have equal success in challenging calls. c. Based on the results, does it appear that men and women may have equal success in challenging calls? appear to be a significant difference between the two proportions. There evidence to OA. The confidence interval suggests that there is a significant difference between the success of men and women in challenging calls. It is reasonable to speculate that men have more success. OB. The confidence interval suggests that there is a significant difference between the success of men and women in challenging calls. It is reasonable to speculate that women have more success. Or. The confidence interval sunnests that there is no significant difference between the success of men and women in challenging calls

A researcher looking for evidence of extrasensory perception (ESP) tests 1000 subjects. Forty-three of these subjects do significantly better (P < 0.05) than random guessing. Forty-three seems like a lot of people, but you cannot conclude that these 43 people have ESP. Why not? The statistical significance level is not be stringent enough to conclude an ESP status. Since the tests were performed at the 5% significance level, as many as 50 subjects may have done significantly better than random guessing just by chance. The sample size was not large enough for any statistical inference. The P-value needs to be below 0.025 to be considered statistically significant given the two-tailed nature of this type of test.

A researcher wants to know if mood is affected by music. She conducts a test on a sample of 4 randomly selected adults and measures mood rating before and after being exposed to classic rock music. Test the hypothesis that mood rating decreased after being exposed to classic rock music. The mood ratings for the four participants are provided. Assume that all conditions for testing have been met. Report the null and alternative hypothesis and p-value. At the 1% significance level, state the decision regarding the null hypothesis and the conclusion about the original claim. Round all values to the nearest thousandth. Click the icon to view the mood ratings. OA. Ho Hdifference =0, Ha Hdifference >0; p=0.373; Reject the null hypothesis; there is strong evidence to suggest that exposure to classic rock music decreased mood rating. B. Ho Hdifference =0, Ha Hdifference >0; p=0.373; Fail to reject the null hypothesis; there is not strong evidence to suggest that exposure to classic rock music…

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Since an instant replay system for tennis was introduced at a major​ tournament, men challenged 1435 referee​ calls, with the result that 413 of the calls were overturned. Women challenged 748referee​ calls, and 222 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.

In a study of 800 randomly selected medical malpractice lawsuits, it was found that 510 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? OA. Ho: p=0.5 H₁: p0.5 OD. Ho: p0.5 H₁: p=0.5 OF. Ho: p > 0.5 H₁: p=0.5

Adults randomly selected for a poll were asked if they​ "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human​ embryos." Of the subjects​ surveyed, 257 were in​ favor, 281 were​ opposed, and 103 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 flip. Use a 0.01 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5.   Find the null and alternative hypothesis. H0: p=0.5 p<0.5 p≠0.5 p>0.5   H1: p<0.5 p>0.5 p≠0.5 p=0.5   If we consider + to represent those in favor, then how many of each sign is there? Positive Signs:  Negative Signs:  Total Signs:  What is the p-value?  (Round to three decimal places.) What is the conclusion about the null?       What is the conclusion about the claim?

In a study of 783 randomly selected medical malpractice lawsuits, it was found that 489 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? O A. Ho:p> 0.5 H₁: p=0.5 OB. Ho: p0.5 H₁: p=0.5 ỌC. Hoi p=0.5 H₁: p>0.5 OD. Ho: p=0.5 H₁: p<0.5 OF Hop<0.5 O E. Ho: p=0.5 H₁: p=0.5 H₁: p=0.5

Suppose 242 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.10 significance level to test the claim that more than 20​% of users develop nausea. Identify the null and alternative hypotheses for this test.  Identify the test statistic for this hypothesis test. Identify the​ P-value for this hypothesis test. Identify the conclusion for this hypothesis test.

Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1902 people and found that 579 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? c) Identify the appropriate significance level. d) Calculate your test statistic (Use ˆpp^ rounded to 4 decimal places). Write the result below, and round your test statistic to 4 decimal places. e) Calculate your p-value. Write the result below, rounded to four decimal places. f) Do you reject the null hypothesis? We reject the null hypothesis, since the p-value is less than the significance level. We reject the null hypothesis, since the p-value is not less than the significance level. We…