Question
Based on a random sample of 1180? Adults, the mean amount of sleep per night are 8.06 hours. Assuming the population standard deviation for amount
Based on a random sample of 1180? Adults, the mean amount of sleep per night are 8.06 hours. Assuming the population standard deviation for amount of sleep per night is 1.2 hours, construct and interpret a 90? % confidence interval for the mean amount of sleep per night
90? % confidence interval is _________
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Step: 1
The confidence level is 090 For 1 090 010 2 010 2 005 From the Standard Normal Table the requirement is Z 005 That is PZ z 005 Procedure for finding t...
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Step: 2
Step: 3
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Seeing Through Statistics
Authors: Jessica M.Utts
4th Edition
1285050886, 978-1305176249, 1305176243, 978-1305322394, 978-1285050881
