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A) Compute a 95% confidence interval for the population mean, based on the sample 32, 38, 31, 34, 35, 32, and 36.
B) Change the last number in that set from 36 to 14 and recalculate the confidence interval.
C) Using the results, describe the effect of an outlier or extreme value on the confidence interval.
The probabilities that an automobile salesperson will sell 0, 1, 2, or 3 cars on any given day in February are, respectively, 0.19, 0.38, 0.29, and 0.15.
Determine the probability that Mexican American male in the 20 -74 age range has serum cholesterol value greater than 240 mg/dl.
Fitting of simple linear regression equation - Given the student population for a school district over the past few years, find the prediction equation for this data.
What is probability of selecting 2 families neither had taxes prepared by H&R Block?
Create the indicated confidence interval for population mean µ using a t- distribution.
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
A financial planner wants to compare the yield of income and growth mutual funds. Fifty thousand dollars is invested in each of a sample of 35 income and 40 growth funds
Revenue and cost functions for producing and selling quantity x for certain production facility are given below. Find out profit function P(x).
First, describe in your own words (no direct quotes, please) what a dummy variable is and its purpose in regression analysis. Secondly, provide an example of where you might use a dummy variable from your own professional experience.
Could mud-wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington health center wondered this when one male and six female students complained of rashes..
Set up a hypothesis test. Is Charmers' truthful? Describe by working through hypothesis test.
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