The pass completion percentages of 10 college football quarterbacks for their freshman and sophomore seasons are shown in the table below. At a = 0.01, is there enough evidence to support the clain the pass completion percentages have changed? Complete parts (a) through (e) below. Player 6 7 8 9 10 1 2 3 4 5 67.2 62.7 57.4 61.0 62.4 51.0 58.0 62.3 55.8 59.8 Completion percentage (freshman) Completion percentage (sophomore) 66.7 56.7 63.2 62.4 61.3 58.9 63.3 61.3 57.1 60.9 (a) Identify the claim and state Ho and Ha What is the claim? A. The pass completion percentages have changed. OB. The pass completion percentages have increased. OC. The pass completion percentages have not changed. OD. The pass completion percentages have decreased. Let μd 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 Ho and H₂? C. Ho: Hd=0 OA. Ho: Hd zd Ha: Hd d Ha: Hd #0 D. Ho: Hd ≤0 OF. Ho: Hd #0 O E. Ho: Hd 20 Ha: Hd <0 Ha: Hd >0 Ha: Hd = 0 (b) Calculated and sd. Calculate d. d= (Round to three decimal places as needed.)

The pass completion percentages of 10 college football quarterbacks for their freshman and sophomore seasons are shown in the table below. At a = 0.01, is there enough evidence to support the clain the pass completion percentages have changed? Complete parts (a) through (e) below. Player 6 7 8 9 10 1 2 3 4 5 67.2 62.7 57.4 61.0 62.4 51.0 58.0 62.3 55.8 59.8 Completion percentage (freshman) Completion percentage (sophomore) 66.7 56.7 63.2 62.4 61.3 58.9 63.3 61.3 57.1 60.9 (a) Identify the claim and state Ho and Ha What is the claim? A. The pass completion percentages have changed. OB. The pass completion percentages have increased. OC. The pass completion percentages have not changed. OD. The pass completion percentages have decreased. Let μd 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 Ho and H₂? C. Ho: Hd=0 OA. Ho: Hd zd Ha: Hd d Ha: Hd #0 D. Ho: Hd ≤0 OF. Ho: Hd #0 O E. Ho: Hd 20 Ha: Hd <0 Ha: Hd >0 Ha: Hd = 0 (b) Calculated and sd. Calculate d. d= (Round to three decimal places as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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