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The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A foreign newspaper claims that the mean lifespan for Honolulu residents is less than 77 years. You randomly select a sample of 20 obituary notices in a Honolulu newspaper. The table below shows the data collected (in years). 72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 Use the graphing calculator to find the test statistic.

The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A foreign newspaper claims that the mean lifespan for Honolulu residents is less than 77 years. You randomly select a sample of 20 obituary notices in a Honolulu newspaper. The table below shows the data collected (in years). 72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 Use the graphing calculator to find the test statistic.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 4CA
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The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A foreign newspaper claims that the mean lifespan for Honolulu residents is less than 77 years. You randomly select a sample of 20 obituary notices in a Honolulu newspaper. The table below shows the data collected (in years). 72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 Use the graphing calculator to find the test statistic.
Transcribed Image Text:The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A foreign newspaper claims that the mean lifespan for Honolulu residents is less than 77 years. You randomly select a sample of 20 obituary notices in a Honolulu newspaper. The table below shows the data collected (in years). 72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 Use the graphing calculator to find the test statistic.
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