The pass completion percentages of 10 college football quarterbacks for their freshman and sophomore seasons are shown in the table below. At a=0.10, is there enough evidence to support the claim that the pass completion percentages have changed? Complete parts (a) through (e) below. Player 3 4 5 6 7 8 9 10 Completion percentage (freshman) 68.3 62.1 56.3 59.0 62.1 51.0 58.0 62.6 54.9 57.1 Completion percentage (sophomore) 67.9 57.1 62.6 59.6 60.8 59.2 63.8 61.6 56.0 58.2 OD. The pass completion percentages have not changed. Let Ho 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? B. Ho: Hd=0 OA. Ho: Hd 20 Ha: Hd <0 OC. Ho: Hd #0 H₂: Hd=0 Ha: Hd #0 OD. Ho: Hd zd OE. Ho: Hasd H₂: Hg>d OF. Ho: Hd ≤0 Ha: Hd>0 H₂: H

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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Question
The pass completion percentages of 10 college football quarterbacks for their freshman and sophomore seasons are shown in the table below. At a = 0.10, is there enough evidence to support the claim that the pass completion
percentages have changed? Complete parts (a) through (e) below.
Player
4 5
6
7
8
9 10
Completion percentage
(freshman)
1 2 3
68.3 62.1 56.3 59.0 62.1 51.0 58.0 62.6 54.9 57.1
Completion percentage
(sophomore)
67.9 57.1 62.6 59.6 60.8 59.2 63.8 61.6 56.0 58.2
OD. The pass completion percentages have not changed.
Let Hd 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?
O A. Ho: Hd 20
B. Ho: Hd = 0
OC. Ho: Hd #0
Ha: Hd = 0
Ha: Hd <0
H₂: Hd #0
OD. Ho: Hd zd
OE. Ho: Hasd
H₂: H
OF. Ho: Hd ≤0
Ha: Hd > 0
Ha: Hd <d
(b) Calculated and sd-
Calculate d.
(Round to three decimal places as needed.)
Transcribed Image Text:The pass completion percentages of 10 college football quarterbacks for their freshman and sophomore seasons are shown in the table below. At a = 0.10, is there enough evidence to support the claim that the pass completion percentages have changed? Complete parts (a) through (e) below. Player 4 5 6 7 8 9 10 Completion percentage (freshman) 1 2 3 68.3 62.1 56.3 59.0 62.1 51.0 58.0 62.6 54.9 57.1 Completion percentage (sophomore) 67.9 57.1 62.6 59.6 60.8 59.2 63.8 61.6 56.0 58.2 OD. The pass completion percentages have not changed. Let Hd 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? O A. Ho: Hd 20 B. Ho: Hd = 0 OC. Ho: Hd #0 Ha: Hd = 0 Ha: Hd <0 H₂: Hd #0 OD. Ho: Hd zd OE. Ho: Hasd H₂: H OF. Ho: Hd ≤0 Ha: Hd > 0 Ha: Hd <d (b) Calculated and sd- Calculate d. (Round to three decimal places as needed.)
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