ared the San Antonio Spurs\' offensive PERFORMANCES at home and on the road for
ID: 3066945 • Letter: A
Question
ared the San Antonio Spurs' offensive PERFORMANCES at home and on the road for the 2009-2010 regular season a discovered that the Spurs' average PERFORMANCE was 8.2 points higher at hom Suppose that we tested the null hypothesis that the Spurs have the same offe ABILITY at home and on the road against the alternative hypothesis that the Spurs have a greater ABILITY to score at home and that the p-value was 0.290. Explain what is wrong with the following conclusions. 7. In the last chapter (Exercise 31), you comp (a) Because the p-value is small, we fail to reject the null hypothesis. We do not have convincing evidence that the Spurs have a greater ABILITY to score 8 at home. (b) Because the p-value is small, we reject the null hypothesis. We have 5 convincing evidence that the home crowd causes the Spurs to score more points. 8. In the last chapter (Exercise 32), you compared Drew Brees's passing PERFORMANCES in 2008 and in 2009 and discovered that his average PERFORMANCE was 24.2 yards greater in 2008. Suppose that we tested the null hypothesis that Brees's ABILITY was the same in 2008 and 2009 against the alternative hypothesis that Brees'S ABILITY was greater in 2008 and that the p-value was 17%. Explain what is wrong with the following conclusions. (a) Because the p-value is large, we fail to reject the null hypothesis. We have convincing evidence that Brees's ABILITY was the same in 2008 and 2009. (b) Because the p-value is large, we reject the null hypothesis that his ABILITY was the same both years. We have convincing evidence that he had a greater ABILITY in 2008.Explanation / Answer
7 a) When the p- value is small, we have to reject the null hypothesis. And moreover, significance level is missing in the statement. We always compare the p-value with the sugnificance level.
b) We have convincing evidence that the spurs have a greater ability to score at home, however, we cannot claim anything about the cause.
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