statistics
posted by jill .
60% of the students at a college are female. If 13 students at that college are selected random, find the probability that 5 or 6 students will be female

POST YOUR QUESTIONS AT ww w.ac eyou rcoll egec las sses . c o m

Do students at various universities differ in how sociable they are? Twentyfive students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students. The result for University X was a mean of 5 hours and an estimated population variance of 2 hours; for University Y, M = 4, S2 = 1.5; and for University Z, M = 6, S2 = 2.5. What should you conclude? Use the .05 level.