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A human resources manager reported data from a recent involuntary Reduction in Force (RIF) at her company. You are an attorney and want to determine if age discrimination was a factor (it is illegal to discriminate against employees because of age). The company reported the number of employees in two groups: 40 years old or younger, and over 40 years old. They also reported the number of employees in each group who were terminated. You want to determine if both age groups were treated equally. Which hypothesis test would be most appropriate for this analysis?
Why is this a test for two proportions and not a two sample t test?
Can you generalize this to each possible random digit/outcome in the sample space?
What is the z-score that corresponds to the 22.66th percentile when a sample data has a mean of 72 and a standard deviation of 8?
Using two independent samples, we test for a hypothesized difference between two population means.
In situations for which the parameter of interest is the difference in population means for independent samples, is it necessary for the two samples sizes.
Mutual funds are classified as large-cap funds, medium cap funds, or small-cap funds, depending ont eh capitalizaiton of the companies in the fund.
When trucks arrive at the Ambassador Bridge, each truck must be checked by customs agents. The times are exponentially distributed with a service rate of 10 per hour. What is the probability that a truck requires more than 15 minutes to be checked..
What are examples in which non-parametric tests are used to analyze business related problems in general, and more specifically, problems related to marketing?
We want the overshoot to be approximately 7.5% for a step input and the settling time (with a 2% criterion) of the system be 400 ms. Find a suitable phase-lead compensator by using root locus methods.
Clearly identify the independent and dependent variables you would study. Determine whether a one-tail or two-tail test is most appropriate and explain why. Generate a testable null statistical hypothesis and an alternative statistical hypothesis.
A test is made of H0: =µ 20 versus H1: ? µ 20. A sample of size n = 55 is drawn, and x = 18. The population standard deviation is s = 8
many customers complain because the declared lifetime of the light bulb you produce is 1000 hours while they seem to
Let d denote the set of points that are interior to, or on the boundary of, a square with opposite vertices at the points (0, 0) and (1, 1). Let Q( A) = LJ dy dx.
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