A study on the correlation between sleep quality and academic performance of SHS students is done by some PRACRES students. A random sample of 8 students is taken and the data for the number of hours of sleep per night (in hours) is recorded below: 4 4.5 5 5 5.5 6 6.5 7 Find the sample mean and the sample standard deviation. [Select] Determine a 90% confidence interval for the true average, assuming the number of hours of sleep follows a normal distribution. [ Select] Based on the computed interval, is there a reason to believe the claim that the true average number of hours of sleep is equal to 6.0 hours? [Select]

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A study on the correlation between sleep quality and academic performance of SHS students is done by some
PRACRES students. A random sample of 8 students is taken and the data for the number of hours of sleep per
night (in hours) is recorded below:
4 4.5 5 5 5.5 6 6.5 7
Find the sample mean and the sample standard deviation.
[Select]
Determine a 90% confidence interval for the true average, assuming the number of hours of sleep follows
normal distribution. [ Select]
<
Based on the computed interval, is there a reason to believe the claim that the true average number of hours
of sleep is equal to 6.0 hours? [Select]
Transcribed Image Text:A study on the correlation between sleep quality and academic performance of SHS students is done by some PRACRES students. A random sample of 8 students is taken and the data for the number of hours of sleep per night (in hours) is recorded below: 4 4.5 5 5 5.5 6 6.5 7 Find the sample mean and the sample standard deviation. [Select] Determine a 90% confidence interval for the true average, assuming the number of hours of sleep follows normal distribution. [ Select] < Based on the computed interval, is there a reason to believe the claim that the true average number of hours of sleep is equal to 6.0 hours? [Select]
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