Question 1 of 13 1.0 Points Three years ago, the mean price of a single-family h

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Question 1 of 13 1.0 Points Three years ago, the mean price of a single-family home was $243,706. A real estate broker believes that the mean price has increased since then.
Which of the following is the hypothesis test to be conducted? A. H0: ?=$243,706; H1: ??$243,706 B. H0: ?=$243,706; H1: ?>$243,706 C. H0: ?=$243,706; H1: ?<$243,706 Reset Selection

Mark for Review What's This? Question 2 of 13 1.0 Points Six years ago, 11.3% of registered births were to teenage mothers. A sociologist believes that the percentage has decreased since then.
Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. A. There is not sufficient evidence to conclude that the percentage of teenage mothers has decreased. B. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. D. There is sufficient evidence to conclude that the percentage of teenage mothers has decreased. Reset Selection

Mark for Review What's This? Question 3 of 13 1.0 Points Some have argued that throwing darts at the stock pages to decide which companies to invest in could be a successful stock-picking strategy. Suppose a researcher decides to test this theory and randomly chooses 150 companies to invest in. After 1 year, 81 of the companies were considered winners; that is, they outperformed other companies in the same investment class. To assess whether the dart-picking strategy resulted in a majority of winners, the researcher tested H0: ?=0.5 versus H1: ?>0.5 and obtained a P-value of 0.1636. Explain what this P-value means. A. About 81 in 150 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. B. About 81 in 150 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5. C. About 16 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5. D. About 16 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. Reset Selection Question 1 of 13 1.0 Points Three years ago, the mean price of a single-family home was $243,706. A real estate broker believes that the mean price has increased since then.
Which of the following is the hypothesis test to be conducted? A. H0: ?=$243,706; H1: ??$243,706 B. H0: ?=$243,706; H1: ?>$243,706 C. H0: ?=$243,706; H1: ?<$243,706 Reset Selection

Mark for Review What's This? Question 2 of 13 1.0 Points Six years ago, 11.3% of registered births were to teenage mothers. A sociologist believes that the percentage has decreased since then.
Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. A. There is not sufficient evidence to conclude that the percentage of teenage mothers has decreased. B. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. D. There is sufficient evidence to conclude that the percentage of teenage mothers has decreased. Reset Selection

Mark for Review What's This? Question 3 of 13 1.0 Points Some have argued that throwing darts at the stock pages to decide which companies to invest in could be a successful stock-picking strategy. Suppose a researcher decides to test this theory and randomly chooses 150 companies to invest in. After 1 year, 81 of the companies were considered winners; that is, they outperformed other companies in the same investment class. To assess whether the dart-picking strategy resulted in a majority of winners, the researcher tested H0: ?=0.5 versus H1: ?>0.5 and obtained a P-value of 0.1636. Explain what this P-value means. A. About 81 in 150 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. B. About 81 in 150 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5. C. About 16 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5. D. About 16 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. Reset Selection

Explanation / Answer

D

C

B

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