assume that the mean of a distribution of test score is 400, with a standard deviation...

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assume that the mean of a distribution of test score is 400, with a standard deviation...

assume that the mean of a distribution of test score is 400, with a standard deviation of 45. What would be the value of the score that falls two standard deviations above the mean?

math Statistics-And-Probability

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Answer 1

Answer #1

Solution:-

Given that,

mean = = 400

standard deviation = = 45

z = 2.00 ( two standard deviations above the mean )

Using z-score formula,

x = z * +

x = 2.00 * 45 + 400

x = 490

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Answer 2

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