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Question: "Using T-tests to compare the monthly performances of 'XXX Corp' and 'YYY Inc'. Check how sample periods affect your conclusion. " In this statement, what's the meaning of how sample periods affect the conclusion, is that means we need to select different sample within population but in same size to do the t-test?
q1. the mcdougal sandwich shop has two windows available for serving customers who arrive at a poisson rate of 40hr.
a study considered the question are you a registered voter? accuracy of response was confirmed by a check of city
Your firm is having a quality problem with the production of plastic automotive parts: There are too many defectives. One of your engineers thinks the reason.
A 0.50kg lump of clay is moving with a horizontal velocity of 2m/s hits the wheel and sticks at the edge. Find the new angular speed of the system in rpm.
A SRS of size 16 drawn from a Normally Distributed population has a mean of 30 and a standard deviation, s, of 5. With 95% confidence, what is the interval that captures the true mean of the population?
The management of the company wishes to be 95?% confident that the sample mean is correct to within plus or minus±?$60 of the population mean.
Among 500 freshmen pursuing a business degree at a university, 347 are enrolled in an economics course, 204 are enrolled in a mathematics course, and 160 are enrolled in both an economics and a mathematics course.
A person has a chance to invest $50,000 in a business venture. If the venture works, the investor will reap $200,000. If the venture fails, the investor will lose his money. It appears that there is about a .50 probability of the venture working. ..
4. Here is an alternative procedural representation of pairs. For this representation, verify that (car (cons x y)) yields x for any objects x and y.
Continuing the previous exercise, use the normal approximation to the binomial to answer each of the questions posed in parts a through f.
1. Consider the function f ( x ) = cx3 for x = 1, 2, 3, 4; where c is a constant. Let X be a discrete random variable with probability function f (x).
A standard deviation of 2.8 inches, what height would the doorway have to be to allow 60% of men to enter without bending over?
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