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A population has a mean (m) of 615 and a standard deviation (s) of 90. Assume that a sampling distribution of sample means has been constructed, based on repeated samples of n = 400 from this population.
a. What would be the value of the mean of the sampling distribution?
b. What would be the value of the standard error of the mean?
Show that the map phi: H->M_2(C) defined by phi(a+bi+cj+dk)=(a+b(sqrt -1),c+d(sqrt-1);-c+d(sqrt-1),a-b(sqrt-1)) is a ring homomorphism. Calculate its kernel and describe its image. Ps. Here H is the ring of integral Hamilton Quaternions and M_2(C) ..
telephone calls enter a switchboard at a rate of 3 calls per minute. assume that any given no more than one call will
Drug tests. Major League Baseball tests players to see whether they are using performance-enhancing drugs. Officials select a team at random.
Discuss different ways to plot the data. Choose one way to make a plot and give reasons for your choice.- Make the plot and describe what it shows.
A manufacturer examines its records over the last year on a component part received from outside suppliers. The breakdown on source (supplier A, supplier B).
Translate the following arguments into symbolic form.- If we are less than certain the human fetus is a person, then we must give it the benefit of the doubt.
A national Park Service survey of visitors to the Rocky Mountain region revealed that 50% visit Yellowstone, 40% visit the Tetons, and 35% visit both. What is the probability a vacationer will visit at least one of these?
which is not a possible reason to choose the z distribution for a hypothesis test of a mean?a. the value of s is
What is the overall shape of this distribution? What does this shape say about word lengths in Shakespeare?
Use data to test independence of receiving/not-receiving aspirin and rates of stroke within 10 years. Show (i) assumptions, (ii) hypotheses, (iii) test statistic, (iv) p-value, (v) conclusion in the context of this study.
suppose the data represent the inches of rainfall in april for a certain city over the course of 20 years.a determine
Either use the p-value approach to hypothesis testing or use the significance level approach with α = .05.
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