Mathematics, 18.11.2020 06:50 briannianoel876

The quiz grades of a math class are given. 83, 76, 68, 97, 68, 80, 89, 74, 75, 81, 91, 90

The grades are normally distributed with a mean of 81 and a standard deviation of 9.3.

What is the z-score of the highest grade in the quiz?

Round the answer to the nearest hundredth.

−1.72
−1.08
1.08
1.72

Answers: 2

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The quiz grades of a math class are given. 83, 76, 68, 97, 68, 80, 89, 74, 75, 81, 91, 90