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Four buses carrying 156 high school students arrive to Montreal. Buses carry, respectively, 39, 48, 28, and 41 students. One of students is arbitarily selected. Let X denote number of students which were on bus carrying this arbitarily selected student. One of 4 bus drivers is also arbitarily selected. Let Y denote number of students on his bus. Caculate expectations of X and Y: E(X)=?
Find the probability that in a given year,a) Exactly one major hurricane will strike the U.S. mainland
Ethics. The one-time fling! Have you ever purchased an article of clothing (dress, sports, jackets, etc.) worn the item once to a party, then returned the purchase?
Make a pie chart or other indicator that expresses the market position of your fictitious IS business in terms of its top five products or services.
Find the proportion of employees who are managers and have MBA degrees.
This table gives three measurements of 10 samples made in a production run. Use statistical process control method to solve problem.
Men are usually the snow blower accident victims. There are several factors to consider, but we're going to choose the level of operating experience between men ages 21-35.
In general, determine the standard score a measure of?
Stock 2 closing price over last month has the mean of 59.2 and the standard deviation of 3.3. Determine which has higher coefficient of variation?
A mathematical placement test is given to all entering freshmen at a small college. A student who receives grades below 35 is denied admission to the regular mathematics course and placed in a remedial class.
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
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