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It is said that there are lies, damned lies, and then there are statistics. Statistics can be used for a myriad of good purposes but they are notorious for being misused and abused for all manner of purposes. Look around and see if you can find some ways that you believe statistics are being used either inappropriately or wrongly. Provide the information on where you got the information and your comments.
Find the probability that the randomly chosen marble is: a. red P(red)=. b. white P(white), and c. blue OR redx P(red OR blue). SHOW WORK
Imagine a study where the correlation between some amount of an experimental drug and liver damage yields a value for r close to zero and the hypothesis H0: ρ = 0 is not rejected. Why might it be unreasonable to conclude that the two variables und..
to give a 99.9 confidence interval for a population mean ? you would use the critical valuea.z 2.576.b.z 1.960.c.z
Assume that all the random variables follow normal distribution and the constraints have to be satisfied with a minimum probability of 0.95.
Sports and Leisure. The Wimbledon Championships tennis tournament, where women players curtsy to the Queen and fans eat strawberries and cream.
Suppose that on a 100-point test, the goal is for the students' exam scores to have a standard deviation of less than 10 pts. A recent sample of 22 exams has a standard deviation of 12.1. Use alpha = 0.05.
Given that other studies show a benefit of computerized brain training, state the null and alternative hypotheses.
A Student takes a ten-question true/false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 70% of the questions correct. (Round your answer to three decimal pl..
Assume that demand for services per period is Pt = 1000 - Qt where Qt is the stock of the durable consumed. Let the discount factor for consumers and the firm be given by δ. Find the profit-maximizing prices and outputs for a durable goods monopol..
Explain in words and numbers what the regression says.- The intercept is negative. Discuss its value, taking note of its P-value.- The output reports s = 53.79. Explain what that means in this context.
2. Let f be a surjection. Then f is an isomorphism iff the order of the element f(a) is equal to the order of the element a , for all a belong to G. First, I want to know if f is the trivial homorphism, then both will fail, right? Second, if f is n..
A psychologist is interested in determining whether there is a relationship between empathy and depression. All participants complete the Basic Empathy Scale
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