In: Statistics and Probability
A statistical analyst for the Wall Street Journal randomly selected six companies and recorded both the price per share of stock on January 1, 2009 and on April 30, 2009. The results are presented below. Suppose the analyst wished to see if the average price per share of stock on April 30, 2009 is less than the average price per share of stock on January 1, 2009 at α=.025.
Apr. 30, 2009 | 33 | 27 | 32 | 25 | 35 | 34 |
Jan. 1, 2009 | 40 | 28 | 30 | 34 | 48 | 36 |
For the hypothesis stated above, what is the decision (in terms of "April 30, 2009" minus "January 1, 2009")?
a. |
Reject H0 because P-value < α |
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b. |
Fail to reject H0 because the test statistic is to the right of the negative critical value |
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c. |
Fail to reject H0 because P-value < α |
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d. |
Reject H0 because the test statistic is to the right of the negative critical value |
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e. |
None of the answers is correct |