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Among adults in the US, the distribution of albumin levels (a type of protein) in cerebrospinal...

Among adults in the US, the distribution of albumin levels (a type of protein) in cerebrospinal fluid is roughly symmetric with mean u= 29.5mg/100ml and standard deviation sigma = 9.25. Suppose that you select many repeated sample sizes of 20 from this population and calculate the mean for each sample.

What proportion of the means of sample sizes of 20 are expected to be larger than 33 mg/100ml?

Math   Statistics-And-Probability   
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Answer: ----                                                                                  Date: ----18/10/2018

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