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The pass completion percentages of 10 co Iege footba | quarterbacks for their freshman and sophomore seasons are shown in the table below. At (1
The pass completion percentages of 10 co Iege footba | quarterbacks for their freshman and sophomore seasons are shown in the table below. At (1 = 0.05, is there enough evidence to support the claim that the pass completion percentages have changed? Complete parts (a) through (e) below. Player 1 2 3 4 5 6 7 8 9 10 D c'"\"'e\"" percen'age 55.3 62.8 55.5 59.0 64.6 52.0 55.0 52.1 54.3 59.9 (freshman) Completion percentage (sophomore) 66.2 57.8 62.2 59.7 62.7 60.3 63.7 61.1 55.9 61.4 (a) Identify the claim and state H0 and Ha- What is the claim? . The pass completion percentages have decreased. A B. The pass completion percentages have increased. C. The pass completion percentages have changed. D . The pass completion percentages have not changed. Let \"a be the hypothesized mean of the differences in the pass completion percentages (freshman sophomore). Then d is the sample mean of the differences. What are H0 and Ha? A. H0:pd20 \"B. HDZsza C H0: (1de Hail'd'O Ha:pdd L D. Ho:pdso C. E. H0:pd=0 F. H0: pdeo Ha:pd>0 Ha:pd#0 Ha: pd: (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and ll in any answer boxes to complete your choice. (Round to two decimal places as needed.) A. t C. t> (c) Ca culate d and 5d- Calculate d. a: (Round to three decimal places as needed.) Calculate sd. 5d = (Round to three decimal places as needed.) (d) Find the standardized test statistic t. t= (Round to two decimal places as needed. (e) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim. V the null hypothesis. There V enough evidence to V the claim that the pass completion percentages have V
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