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Suppose that the random variable X is the time taken by a garage to service a car. These times are distributed between 0 and 10 hours with a cumulative distribution function given by:
F(x) = 0.36065 ln(3x + 2) - 0.25 for 0 ? x ? 10.
What is the probability that a repair job takes longer than 2 hours?
The following output is the result of running a linear regression on WEIGHT (y) = average weight in pounds for American females. Based on this regression model output, what will be the weight of a Russian Female who is 71 inches tall?
question past records show that the mean life of a certain brand of batteries used in a digital clock is 305 days.
assume that 25 of all business students at a large university invest in the stock market. a random sample of 120
An orange juice producer buys only one kind of oranges. The amount of juice squeezed from each of these oranges is approximately normally distributed with a mean of 4.2 ounces and a population standard deviation of 1 ounce.
Find the roots of the quadratic equation:z^2-4z-12=0. (If there is more than one root, separate them with commas.)
Below are one hundred pseudorandom numbers from a uniform pdf. Set up and test the appropriate goodness-of-fit hypothesis. Let α = 0.05.
refer to the following frequency distribution for questions 1 2 3 and 4.the frequency distribution below shows the
The price of XYZ Corporation stock is normally distributed all through the year with mean of $42.00 per share and a standard deviation of $2.25 per share. Suppose that the stock is traded 240 days out of the year.
you are given the following information obtained from a sample of 5 observations taken from a population that has a
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds.
Use the rules to find an F -statistic for testing whether the term is present, assuming an unrestricted model. Do any of your answers change if you assume a restricted model instead?
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