Listed below are student evaluation ratings of courses where a rating of 5 is for excellent....

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Listed below are student evaluation ratings of courses where a rating of 5 is for excellent. The ratings were obtained at one

math Statistics-And-Probability

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Answer 1

Answer #1

Find sample size , mean and standard deviation of the Ratings

А B C D E F H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 G Ratings 4.0 2.9 3.8 4.7 3.2 4.4 3.3 4.8 4.7 4.2 4.4 3.9 3.

Formula Reference:

A F G I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Ratings 4 2.9 3.8 4.7 3.2 4.4 3.3 4.8 4.7 4.2 4.4 3.9

99% Confidence interval:

(Refere column F for the formuals used and the calculation procedure)

A B C E F 1 Confidence interval Formula 15 Sample Size Sample Mean Standard Deviation 3.97 0.61 2 3 4 5 6 7 8 9 10 11 12 13 1

The confidence interval for the population mean (3.50, 4.44)

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Answer 2

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