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Mathematics 12 Online
OpenStudy (anonymous):

A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distribution that corresponds to the following z-score: z = 3

OpenStudy (anonymous):

Do u knw the formula for z-score in terms of mean and standard deviation?

OpenStudy (anonymous):

would it be (400-60)/3?

OpenStudy (anonymous):

\[z = \frac{ x-\mu }{ \sigma }\]

OpenStudy (anonymous):

now you have to find the x value

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