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1. According to a front-page article in The Wall Street Journal, 30% of all students in American universities miss classes due to drinking.8 If 10 students are randomly chosen, what is the probability that at most 3 of them miss classes due to drinking?
2. According to an article in USA Today, 60% of 7- to 12-year-olds who use the Internet do their schoolwork on line.9 If 8 kids within this age group who use the Internet are randomly chosen, what is the probability that 2 of them do their schoolwork on line? What is the probability that no more than 5 of them do their schoolwork on line?
You are in charge of investing 10,000 dollars and you are considering three different investment strategies.
A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the othe..
3% from excise taxes and 5% other. If a revenue source is selected at random, what is the probability that it comes from individual or corporate income taxes?
How large a sample should be taken if the desired margin of error is?
lipitor is a cholesterol reducing drug. in clinical trials 94 subjects were treated with the drug and 200 were given a
If K is infinite, assume f1 and f2 are injective. Prove by constructing an explicit isomorphism that (H x_f1 K) is isomorphic (H x_f2 K)
Five digit random numbers (e.g.; 601, 022, 448...), determine the first four elements that will be selected for the simple random sample.
The discussion surrounding the ANOVA is very important. This is a widely utilized statistical tool. What is the ANOVA? What is the purpose of the ANOVA? What role does variation have in the discussion? What is the purpose of the F distributio..
the diameter of ball bearings produced in a manufacturing process can be explained using a uniformprobability
Find the probability that the number who consider themselves baseball is (a) exactly 8, (b) at least 8, &(c)less than 8.
Implement the SES and DES formulae on a spreadsheet program, and use it to determine the optimal parameter a in the SES method giving the best MAPD8 error on the time-series of the previous exercise.
the weekly amount spent for maintenance and repairs in a certain company has an approximately normal distribution with
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