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Mathematics 16 Online
OpenStudy (anonymous):

A set of 50 data values has a mean of 22 and a variance of 16. I. Find the standard score (z) for a data value = 14. II. Find the probability of a data value < 14

OpenStudy (callisto):

For the first one, standard score = (data value - mean)/ standard deviation. Where standard deviation = \(\sqrt{variance}\) As for the second one, I'm sorry that I don't know how to do it...

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