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the mean of a set of Data containg 60 entries is 38 and the standard devationis...

the mean of a set of Data containg 60 entries is 38 and the standard devationis 5.

a)what precent of the data should be at least between 33 and 48?

b)what precent of the data should be at least 28?

c)how many data points should be less then 33?

d)how many data points should be between 38 and 48?

Math   Statistics-And-Probability   
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