Mathematics, 28.04.2021 14:00, elizebeth4501

Need help! On a unit test in a statistics class, the teacher determines that the mean test grade was 77.5 with a standard deviation of 5.2. One student’s test grade was 91. What is the z-score for the student’s test?

–5.20
–2.60
2.60
5.20

Answers: 3

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Need help! On a unit test in a statistics class, the teacher determines that the mean test grade w...