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A researcher wishes to see if the variance of the areas in square miles for counties in Indiana is less than the variance of the areas for counties in Iowa. A random sample of counties is selected, and the data are shown. At a = 0.01, can it be concluded that the variance of the areas for counties in Indiana is less than the variance of the areas for counties in Iowa?
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Design a Linear programming problem for the flair Furniture Company and find the combination of tables and chairs that the company must produce to maximize profits.
Determine the probability that subscriber didn't rent the car during past 12 months for either business or personal reasons?
What purpose does a multiple regression analysis serve? Give an example of how it might be used in marketing research.
There is 0.75 probability that you will get promotion or raise. Probability of getting promotion and raise is 0.50. Determine the probability to receive a raise.
What is the probability that a random person has an IQ between 85 and 115? Find the 90th percentile of the IQ distribution.
Supposes that the diameter of bearings are independent normally distributed random variables with mean µB = 1.005cm and variance σ²B = (0.003)² cm² . The diameter of shafts are independent normally distributed random variables having mean µB = 0.9..
By constructing null and alternative hypotheses, computing critical values, and comparing test statistic to critical value.
A college student is taking 5 courses in a semester. He is willing to assume that he will get an A with probability 0.10, a B with probability 0.80, and a C with probability 0.1 in each of the courses. He defines X1, X2, and X3 to be the number of..
20 students in a class - if there is a 15% probability that a randomly chosen member has seen a particular movie - what is the expected number of students have seen the movie?
While in July the mean high temperature is 74oF and the standard deviation is 8oF. In which month is it more unusual to have a day with a high temperature of 55oF?
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a one sample or two sample test?
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