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.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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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