Mathematics, 01.09.2020 22:01, aime005

The quiz grade of a math class are given. 81,75,68,97,69,81,89,74,75,82,91,90 the grades are normally distributed with a mean of 81 and a standard deviation of 9.2. What is the z score of the lowest grade in the quiz ? Round the answer to the nearest hundredth.

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The quiz grade of a math class are given. 81,75,68,97,69,81,89,74,75,82,91,90 the grades are normall...