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Shirts
The soccer team s shirts have arrived in a big box, and people just start grabbing them, looking for the right size. The box contains 4 medium, 10 large, and 6 extra-large shirts. You want a medium for you and one for your sister. Find the probability of each event described.
a) The first two you grab are the wrong sizes.
b) The first medium shirt you find is the third one you check.
c) The first four shirts you pick are all extra-large.
d) At least one of the first four shirts you check is a medium.
You are a research analyst with a large research and development firm, Akron Research. Your firm performs studies and analysis for companies that need product, process improvement, manufacturing, and consulting research services.
Under similar driving conditions, they were tested again, using a special additive. The data are shown here. At a = 0.05, did the additive improve gas mileage? Use the Wilcoxon signed-rank test.
Interpret the LDA. How many axes were needed to separate the groups? Which groups separate on which axis, and what do the loadings tell you about how they differ (i.e. use the loadings to interpret what the crabs look like on either end of each LD..
A research firm has found that 39% of U.S. adults in the over-$75,000 income category work at least 51 hours per week.- For each of the confidence intervals, identify and explain the maximum likely error in the study.
Prepare a plan for implementing Hyper-V as a solution for your organization. Provide a rationale for the plan decisions.
Write a formula for the variance of a sample proportion as a function of p and the sample size, n.- Write a formula for the standard deviation of a sample proportion as a function of p and n.
In the game of bridge, a player is dealt a hand of 13 playing cards from a standard 52 card deck. A hand is said to have a void in a suit if it contains no cards in that suit
Would you expect the variance to be larger or smaller than the variance associated with the probability function used in the previous exercise? Verify your answer by computing the variance.
Enzyme immunoassay (EIA) tests are used to screen blood specimens for the presence of antibodies to HIV, the virus that causes AIDS. Antibodies indicate the presence of the virus.
Place a 95% confidence interval about the population mean number of down hours per month.
Comdell Computer receives computer chips from Chipco.- What is the probability that at least nine of the batches will pass inspection?
Compute the two forecasts by using MAPD and indicate which seems to be more accurate.
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