The table below contains pulse rates after running for 1 minute, collected from a random sample of females who drink alcohol. Find a 96% confidence interval for the mean pulse rate after exercise of all women who do drink alcohol pulse rate after running one minute in bpm 93 148 75 156 136 72 48 67 87 148 92 119 127 102 188 86 151 55 68 95 53 116 69 163 66 120 93

The table below contains pulse rates after running for 1 minute, collected from a random sample of females who drink alcohol. Find a 96% confidence interval for the mean pulse rate after exercise of all women who do drink alcohol pulse rate after running one minute in bpm 93 148 75 156 136 72 48 67 87 148 92 119 127 102 188 86 151 55 68 95 53 116 69 163 66 120 93

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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pulse rate after running one minute in bpm
93
148
75
156
136
72
48
67
87
148
92
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127
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86
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93

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In a recent year, a sample of the South American Redeye Piranha was collected by fishermen on a particular river. Wildlife biologists regard this sample as a random sample of all Redeye Piranha in that river. The mean length of the 60 fish in the sample was 12.88 cm, and a 99% confidence level for the true mean length of all Redeye Piranha in that river is 12.09 cm to 13.67 cm. Explain what would happen to the length of the original interval if the sample size were decreased to 30 fish. The confidence interval will be (wider, narrower, the same) because decreasing the sample size (increases, decreases, does not affect) the margin of error.
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