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Suppose that you take a sample size of 18 from a population that is not normally distributed. Can the sampling distribution of x be approximated by a normal probability distribution?
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1) Let Z be a standard normal random variable with mean = 0 and standard deviation = 1. Us the normal table to find the following answers. a) P(0 b) P(-1.22 c) Find the value Z 0 such that P(0 0 )= 0.4901. 2) On a typic ...
A recent study reported that the prevalence of hyperlipidemia is 30% in children 2 to 6 years of age. If 12 children are analyzed what is the probability that at least 3 are hyperlipidemic?
How many years (and months) will it take $2 million to grow to $5.60 million with an annual interest rate of 7 percent?
A machine has four? components, A? B, C, and? D, set up in such a manner that all four parts must work for the machine to work properly. Assume the probability of one part working does not depend on the functionality of ...
Show Work Suppose you are thinking of purchasing the Moore Co.'s common stock today. If you expect Moore to pay $1.2, $1.26, $1.323, and $1.39 dividends at the end of year one, two, three, and four respectively and you b ...
1. Let random variable x represent the number of heads when a fair coin is tossed two times. (a) Construct a table describing the probability distribution. x P(x) 0 1 2 Determine the mean and standard deviation of x.
In a pre-election poll, a candidate for district attorney receives 304 of 600 votes. Assuming that the people polled represent a random sample of the voting population, test the claim that a majority of voters support th ...
In a multiple choice exam, there are 5 questions and 4 choices for each question (a, b, c, d). Nancy has not studied for the exam at all and decides to randomly guess the answers. What is the probability that: (a) the fi ...
The number of defective items produced by a machine in a large factory follows a Poisson distribution with a rate of λ=1.5 per day. What is the probabilityThe machine produces exactly zero defective items on exactly two ...
Suppose a researcher is interested in the number of good versus bad dreams that students have during final exam week. The researcher states that p = 0.52 that a student will have a bad dream during final exam week. (a) ...
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