Sample mean-variance and standard deviation for grouped data
You're given the following frequency distribution for number of errors 55 students made in the test
Find out:
a) mean,
b) variance
c) standard deviation.
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Suppose the random variable X is normally distributed with the mean m = 130 and standard deviation s = 26. Find out the 10th and 85th percentiles.
Why does the United State Army Corp of Engineers worry about cost allocations? Are not they a branch of the United State Federal Government?
Offer the conclusion based on p-value approach and the results of statistical test produce a p-value of 0.95.
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How to test the hypothesis based on Chi-square test for independence of attributes. At a large commercial bakery one of the measures utilized to evaluate employees is the number of broken cookies per 1000 produced.
Research articles associated to how drug abuse influences families when one or more members are addicted to illicit and/or prescription drugs.
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