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Write down a paragraph about the normal distribution. In the paragraph give an example of a distribution that you would judge to be nearly normal and explain why you have made that conclusion. Estimate the mean of this distribution and the standard deviation. Then estimate a probability based upon those values: (E.g., average height of males is 71" with a st dev of 6". Using these, the probability that a male is more than 84" is (z = 2.17) is .015)
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.
What is the equation for least squares line? Calculate the coefficient of determination.
What is the probability that the cereal would be high calorie? In other words, what is P (high calorie)?
How large a sample is required to estimate the mean speed with a margin of error equal to 2 miles per hour with 90% confidence?
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
IS there any evidence that a freshman's chances to graduate may depend upon what kind of high school the student attended? Describe.
How much do typical employee and his or her family spends per year on dental expenses? Sample of 45 employee reveals mean amount spend last year was $1,820, with standard deviation of $ 660.
Show some work for each part. A diagram can be helpful. A survey of adults found the following: 65 percent of the adults drink coffee. 35 percent drink tea. 80 percent drink coffee or tea (or both). If we choose a surveyed adult at random, find t..
The main purpose of this exercise is to check your understanding of significance level, p-values and power .
For each of the F statistics given above find the degrees of freedom and an approximate P-value. Summarize the results of these tests.
Determine the following probabilities: Events A and B are mutually exclusive events defined on common sample space.
What is the probability of selecting an accounting major, given that the person selected is a male?
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