Question

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?

Answer #1

**Answer:
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Date: ----18/10/2018**

Among adults in the US, the distribution of albumin levels in
cerebrospinal fluid is roughly symmetric with mean µ = 50mg/100ml
and standard deviation σ = 12.7mg/100ml. Suppose that you select
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mean for each sample. If you were to select a large number of
random samples of size 20, the sample variance of the means will
be
a) larger than population variance
b) approximately the same as population variance...

Among adults in the US, the distribution of albumin levels in
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standard deviation = 12:7mg=100ml: Suppose that you select repeated
samples of size 20 from this population and calculate the mean for
each sample. If you were to select a large number of random samples
of size 20, the sample variance of the means will be a) larger than
population variance b) approximately the same as population
variance c) lower...

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