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The inside diameter of a cylindrical tube is a random variable with a mean of 3 inches and a standard deviation of 0.02 inch, the thickness of the tube is a random variable with a mean of 0.3 inch and a standard deviation of 0.005 inch, and the two random variables are independent. Find the mean and the standard deviation of the outside diameter of the tube.
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?
Suppose the world series is about to begin. Some people get together and each decide to predict different win-loss patterns for the seven possible games during the coming series.
let x1 x2 ... xn denote a random sample of size n from a continuous distribution with pdffxtheta theta xtheta-1 for 0
Atlantic Management System is a consulting firm that specializes in developing computerized decision support systems for computed manufacturing companies. The firm currently has offices in Chicago, Charlotte, Pittsburgh, and Houston.
We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of 20 observations having a sample mean of 8 and a sample standard deviation of 2. What is the standard error?
An insurance company insures a large number of homes. The insured value, X, of a randomly selected home is assumed to follow a distribution with density function f(x)=4x-5 , for x>1. Given that a randomly selected home is insured for at least 2, what..
the alphacor company experiences some type of failure on its computer network on average once every 4 hours. assume
a card is drawn from a standard deck of 52 playing cards. a. find the probability that the card is an ace or a king. b.
When finding percentiles, if locator L is not whole number, one procedure is to interpolate so that locator of 23.75, for instance.
If 15 golfers have checked in using this process, what is the expected number and standard deviation of no-shows among these golfers? (Show computations)
Define random variables and use them to express the bi- cycle shop's net profit. What's the mean of the net profit?
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