Expected number of spots showing
Suppose that the number of dice thrown is a binomial random variable with n = 10 and p = 0.98. What is the expected number of spots showing on the thrown dice? Expected number of spots =
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Of the 14 individuals in the sample, 12 are rated higher after the course than before, 1 individual is rated lower, and 1 individualss assessment is unchanged. Using a significance level of 0.05, can we conclude from this information that the cour
If the population standard deviation is 12.3 bushels per acre, create a 90% confidence interval for the mean yield in the state this season. What is the margin of error? Create a 99% confidence interval for the mean yield per acre.
A painter has learned that the time it takes her to paint a random room in a house is normally distributed with a mean of 4 hours and a standard deviation of 45 minutes. id she is just starting work on a random room and has to leave in five hours,
Using the Wilcoxon Rank Sum Test, analyze the following data for evidence that population B is different from population A.
An urn contains 8 red and 12 white balls. Draw one ball at random from the urn. Let X = 1 if a red ball is drawn and X = -1 if a white ball is drawn. Compute the variance of X.
For a normal distribution with ? < 98.6, given a sample of 25 values with a sample mean of 98.2 and a sample standard deviation of 0.62. Which distribution is used to test this claim.
Nineteen customers have placed service calls to obtain AT&T U-Verse. The maintenance technician can only service ten of them before noon. The customers care about the order in which they are serviced, so each possible arrangement of service ca
Post office models the winodw's service times as unifomrly disributed between 1 and 7 minutes. Compute the total expected hourly cost of this post office window.
Estimate the chance that the average of the draws will be in the range 80 to 120. Estimate the chance that the average of the draws will be in the range 99 to 101. with work please.
High-Potassium Foods Potassium is important to good health in keeping fluids and minerals balanced and blood pressure low. High-potassium foods are those that contain more than 200 mg per serving.
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