Standard deviation for sample
Compute SS, variance, and standard deviation for the following sample of n=4 scores: 4, 0, 1, 1. (Note: The computational formula for SS works well with these scores).
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Assume that n trials of binomial experiment result in no successes. According to "Rule of Three", we have 95% confidence that the true population proportion has upper bound of 3/n. If manufacturer randomly chooses 30 computers for quality control
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1 hour later, the faster train leaves station m and also travels west on the parallel track at 40 km/hr. How far from station m will faster train catch slower one?
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