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Suppose that a certain college class contains 60 students. Of these,are 37 freshmen, 28 are economics majors, and 10 are neither. A student is selected at random from the class.
(a) What is the probability that the student is both a freshman and an economics major?
(b) Given that the student selected is a freshman, what is the probability that he is also an economics major?
Write your responses as fractions.
(If necessary, consult a list of formulas.)
a regression of the amount of calories in a serving of breakfast cereal vs. the amount of fat in the cereal gave the
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Enter data into SPSS (use two columns: one for coding {0, 1, 2, 3, 4, 5} and one for DV)
A supplier of 3.5" disks clams that only 1% of the disks are defective. In a random sample of 600 disks, it is found that 3% are defective, but the supplier claims that this is simply a sample fluctuation. At the 0.01 level of significance, test t..
Assume that a study of 300 randomly selected school bus routes showed that 279 arrived on time. Is it unusual for a school bus to arrive late?
Predicting the federal budget. Go to the Congressional Budget Office Web site, www.cbo.gov. Under the tab "Publications" (hover over "By Subject") select "Budget and Economic Information" and then "Budget and Economic Outlook."
The number of monthly breakdowns of a super computer is a random variable having a Poisson distribution with λ = 1.8. Use the formula for the Poisson distribution to find the probabilities that this computer will function
Assume the geometric distribution applies. Use the given probability of success p to find the indicated probability.
For the control group, the mean was 70.3 and the standard deviation was 8.3. (a) Do beta-blockers reduce the pulse rate? State the hypotheses and do a t test.
at what prices would google have to close at in order for it to be considered statistically unusual? you should have a
in 2008 a university in the midwestern united states surveyed its full-time first-year students after they completed
What is the probability an applicant does not pass the test and is a sucessful manager?
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