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answer only answer as fast a u can D Question 12 6 pts A study on the correlation between sleep quality and academic performance of

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D Question 12 6 pts 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.

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