Mathematics, 14.12.2021 22:30 jdjc
The grades of a science test are normally distributed. Thanh finds that his grade on the test has a z-score of â€""2. 5. Which statement must be true? Thanh’s grade is 2. 5 standard deviations below the mean of the test grades. Thanh’s grade is 2. 5 points below the mean of the test grades. Thanh’s grade is 2. 5 standard deviations above the mean of the test grades. Thanh’s grade is 2. 5 points above the mean of the test grades.
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The grades of a science test are normally distributed. Thanh finds that his grade on the test has a...
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