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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 300 companies to invest in. After 1 year, 159 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 Ho:p= 0.5 versus H,: p>0.5 and obtained a P-value of 0.1493. Explain what this P-value means and write a conclusion for the researcher. (Assume a is 0.1 or less.) ..... Choose the correct explanation below. A. About 15 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. O B. About 15 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. O C. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. O D. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5.

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 300 companies to invest in. After 1 year, 159 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 Ho:p= 0.5 versus H,: p>0.5 and obtained a P-value of 0.1493. Explain what this P-value means and write a conclusion for the researcher. (Assume a is 0.1 or less.) ..... Choose the correct explanation below. A. About 15 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. O B. About 15 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. O C. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. O D. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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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 300 companies to invest in. After 1 year, 159 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 Ho: p= 0.5 versus H4: p> 0.5 and obtained a P-value of 0.1493. Explain what this P-value means and write a conclusion for the researcher. (Assume a is 0.1 or less.) Choose the correct explanation below. O A. About 15 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. B. About 15 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. C. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. D. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5.
Transcribed Image Text: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 300 companies to invest in. After 1 year, 159 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 Ho: p= 0.5 versus H4: p> 0.5 and obtained a P-value of 0.1493. Explain what this P-value means and write a conclusion for the researcher. (Assume a is 0.1 or less.) Choose the correct explanation below. O A. About 15 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. B. About 15 in 100 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. C. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is 0.5. D. About 159 in 300 samples will give a sample proportion as high or higher than the one obtained if the population proportion really is greater than 0.5.
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