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Please describe the purpose for each of the three basic measures of variability and provide at least two examples for each.
twenty-five samples of 100 items each were inspected when a process was considered to be operating satisfactorily. in
on a sample of 40 women and 60 men 24 women like shopping while 28 men like shopping is there evidence for gender
Compute the three statistics that measure central location - Briefly describe what each statistic tells you and compute the mean and median of the rates of return.
What is the real world value of the y-intercept and slope in a regression equation? Other than statistics problems, why should I care?
The investigator wants to estimate the average gain in strength due to the training program. Does this comparison involve paired data or data from two independent samples?
What is the probability of getting a number less than 5 on both?
A department store is holding a drawing to give free shopping sprees to two lucky customers. There are 14 customers who have entered the drawing: 4 live in the town of Gaston, 6 live in Pike, and 4 live in Wells.
An article in Annals of Mathematical Statistics reports the following data on the number of borers in each of 120 groups of borers. Does the Poisson pmf provide a plausible model for the distribution of the number of borers in a group?
If an original set of measurements is made in inches and has mean of 36 and variance of 144, what will be the mean, variance, and standard deviation if:
Suppose that X is a random variable with just two possible values a and b. For x = a and b find a formula for p(x) = P(X = x) in terms of a, b and µ = E(X).
you are a medical claims processor for humana. claims arrive at your desk at an average rate of three claims per day
The scheduled commuting time on the Long Island Rail Road from Glen Cove to New York City is 65 minutes. Suppose that the actual commuting time is uniformly distributed between 64 and 74 minutes.
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