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Fifteen percent of the employees in a company have managerial positions, and 25 percent of the employees in the company have MBA degrees. Also, 60 percent of the managers have MBA degrees. Using the probability formulas,
Find the proportion of employees who are managers and have MBA degrees.
Find the proportion of MBAs who are managers.
Are the events being a manager and having an MBA independent? Justify your answer.
Find the percent of a standard Normal model found in the given region. Round to the nearest hundredth of a percent.
Given the variances of the two samples below, find the test value and the degrees of freedom that should be used in an F test.
We considered Mary's interest in doing a study to see if learning of 6th graders on a math lesson is affected by background noise level. She was planning to use 2 noise conditions and then analyze her outcomes using a t-test for independent groups..
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
Test the hypothesis that the average price is higher than $1.87. Use level of significance α = 0.05.
Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major.
Using Microsoft Excel, create a correlation analysis of Wal-Mart's annual net income over the past 10 years compared with Sears's annual net income over the past 10 years and interpret the results.
Bob Billy is an operations analyst for Dollar-Does-It stores based in Iva, SC. He is currently studying the order and stocking policies for top-selling toy.
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
What is the probability that the device will detect at least one of the two shoppers entering together?
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee.
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