students and obtained the following data: 7.9, 5.5, 7.6, 6.2, 6.5, 7.8, 7.2, 7.5, 6.5, 8.5, 6.9, 7.5, 9.4, 7.6, 6.2, 5.6, 8, 8.1, 5.9, 7.3, 5, 8.2, 7.2, 9.2, 7.3, 8.5, 7.9, 7.6, 7.3 Assuming the population standard deviation is o = 0.96, construct a 89% confidence interval for the average hours of sleep per night that college students get. x = a
students and obtained the following data: 7.9, 5.5, 7.6, 6.2, 6.5, 7.8, 7.2, 7.5, 6.5, 8.5, 6.9, 7.5, 9.4, 7.6, 6.2, 5.6, 8, 8.1, 5.9, 7.3, 5, 8.2, 7.2, 9.2, 7.3, 8.5, 7.9, 7.6, 7.3 Assuming the population standard deviation is o = 0.96, construct a 89% confidence interval for the average hours of sleep per night that college students get. x = a
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Transcribed Image Text:Question 9
A scientific study was conducted to determine the hours of sleep that college students get per night. The
study surveyed 29 college students and obtained the following data:
7.9, 5.5, 7.6, 6.2, 6.5, 7.8, 7.2, 7.5, 6.5, 8.5, 6.9, 7.5, 9.4, 7.6, 6.2, 5.6, 8, 8.1, 5.9, 7.3, 5, 8.2, 7.2, 9.2,
7.3, 8.5, 7.9, 7.6, 7.3
Assuming the population standard deviation is a = 0.96, construct a 89% confidence interval for the
average hours of sleep per night that college students get.
x =
a
2
NIR
11
▼ < >
=
Margin of Error: E =
We are 89% confident that college students get an average of between
hours of sleep per night.
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