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A Random Sample of 79 Companies from the Forbes 500

Question 63

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A random sample of 79 companies from the Forbes 500 list (which actually consists of nearly 800 companies) was selected,and the relationship between sales (in hundreds of thousands of dollars) and profits (in hundreds of thousands of dollars) was investigated by regression.The following results were obtained from statistical software. A random sample of 79 companies from the Forbes 500 list (which actually consists of nearly 800 companies) was selected,and the relationship between sales (in hundreds of thousands of dollars) and profits (in hundreds of thousands of dollars) was investigated by regression.The following results were obtained from statistical software. Suppose the researchers conducting this study wish to estimate the profits (in hundreds of thousands of dollars) for companies that had sales (in hundreds of thousands of dollars) of 500.The following results were obtained from statistical software. If the researchers wish to estimate the profits for a particular company that had sales of 500,what would be a 95% prediction interval for the profits? A) (-1066.4,805.6) B) (-248.5,-12.3) C) -130.4 ± 59.3 D) 500 ± 59.3 A random sample of 79 companies from the Forbes 500 list (which actually consists of nearly 800 companies) was selected,and the relationship between sales (in hundreds of thousands of dollars) and profits (in hundreds of thousands of dollars) was investigated by regression.The following results were obtained from statistical software. Suppose the researchers conducting this study wish to estimate the profits (in hundreds of thousands of dollars) for companies that had sales (in hundreds of thousands of dollars) of 500.The following results were obtained from statistical software. If the researchers wish to estimate the profits for a particular company that had sales of 500,what would be a 95% prediction interval for the profits? A) (-1066.4,805.6) B) (-248.5,-12.3) C) -130.4 ± 59.3 D) 500 ± 59.3 Suppose the researchers conducting this study wish to estimate the profits (in hundreds of thousands of dollars) for companies that had sales (in hundreds of thousands of dollars) of 500.The following results were obtained from statistical software. A random sample of 79 companies from the Forbes 500 list (which actually consists of nearly 800 companies) was selected,and the relationship between sales (in hundreds of thousands of dollars) and profits (in hundreds of thousands of dollars) was investigated by regression.The following results were obtained from statistical software. Suppose the researchers conducting this study wish to estimate the profits (in hundreds of thousands of dollars) for companies that had sales (in hundreds of thousands of dollars) of 500.The following results were obtained from statistical software. If the researchers wish to estimate the profits for a particular company that had sales of 500,what would be a 95% prediction interval for the profits? A) (-1066.4,805.6) B) (-248.5,-12.3) C) -130.4 ± 59.3 D) 500 ± 59.3 If the researchers wish to estimate the profits for a particular company that had sales of 500,what would be a 95% prediction interval for the profits?


A) (-1066.4,805.6)
B) (-248.5,-12.3)
C) -130.4 ± 59.3
D) 500 ± 59.3

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