On a recent quiz, the class mean was 71 with a standard deviation of 2.6. Calculate...

Question

Question

math Statistics-And-Probability

Answer 1

Answer #1

Mean= 71 and SD= 2.6

X= 66

Z= X-mean/SD

Z= 66-71/2.6

Z= -5/2.6

Z= -1.92

No this is not UNUSUAL. Because it is within -3 and +3 Z score.

Answer 2

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