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The starting salaries of individuals with a MBA degree are normally distributed with a mean of $40,000 and a standard deviation of $5,000. What is the lowest salary for those individuals with an MBA degree whose starting salary is in the top 10 percent?
What fraction of the calls last between 4.2 and 5 minutes?
We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.
A personality psychologist conducts a study to examine the relationship between extraversion and the number of siblings in a household.
Suppose the population standard deviation is unknown. If 71% of all sample means are greater than 49 hours and the population mean is still 50.4 hours, what is the value of the population standard deviation?
What is the probability that at least three students choose Supreme Chocolate?
Determine the average and the variation for Brand 1 price, sales market share, and total revenue, using the weekly market survey data (descriptive statistics).
You want to show an increase in buying and selling of single-family homes this year when compared with last year's rate.
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national exercise rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and find..
According to the U.S National Center for Health Statistics, the mean height for adult American males is mu = 65.5 inches. Assume the heights are normally distributed with standard deviation of sigma = 3.2.
A random sample of 58 fish is taken from the tank. Let x be the mean sample length of these fish. What is the probability that x is within 0.5 inch of the claimed population mean? (Round your answer to four decimal places.)
Determine payback period for implementing Oracle Discoverer? Assume that WebFocus will be in-place until December 31 and the migration to Oracle will be done concurrently and is expected to be completed and operational by Dec 31 as well.
The drug Ancrod was tested in a double-blind clinical trial in which subjects who had strokes were randomly assigned to get either Ancrod or a placebo.
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