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Let Z be a normally distributed random variable with mean 100 and standard deviation 15.
Transform the uniform variates from above into normal variates with mean 10 and standard deviation 5, using the inverse cumulative distribution function (CDF) for the normal distribution.
What is the maximum value in your new normal sample?
As sample size increases in the treatment and control groups of a study, what effect will that have on the size of the standard error of the difference?
The following data were collected in a study in which 30 students were asked to rate their professors: very good, good, good, fair, excellent
Scrapper Elevator Company has 20 sales representatives who sell its product throughout the United States and Canada. The number of units sold last month
Backfat thickness is a variable used in evaluating the meat quality of pigs. An animal scientist measured backfat thickness (cm) in pigs raised on two different diets, with the results given in the table.
the data in table are diameters in mm of holes in a group of 12 wing leading edge ribs for a commercial transport
Identify the probability of the sample mean of number of pledges (monthly) received post-Year 2000 is more than 260,000 per month
On a test that has a normal distribution, a score of 64 falls three standard deviations above the mean, and a score of 24 falls one standard deviation below
A "wild safari" park allows visitors to drive their cars through over 400 acres to see more than 1000 animals roaming freely. The park claims that the probability of some car damage by an animal during a safari drive-thru is 0.65. Suppose 20 cars ..
Compare the theoretical value of the probability that each face will show up against your simualtion. (The theoretical value is an example in the text.)
You might consider using percentiles, the coefficient of variation, and Tchebysheff's theorem to help describe the data.
Write the hypotheses to test if the proportion of customers using the card has increased from 48%.
There is a 50% chance that your coupon will be worth $10, a 40% chance that it will be worth $25, an 8% chance it will be worth $50 and a 2% chance.
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