SOLUTION: At a college, 6 out of 8 students are sophomores. If 9 students are surveyed, find a) the mean b) the variance c)the standard deviation d) the probability that exactly 3 of the 9 a

Algebra ->  Probability-and-statistics -> SOLUTION: At a college, 6 out of 8 students are sophomores. If 9 students are surveyed, find a) the mean b) the variance c)the standard deviation d) the probability that exactly 3 of the 9 a      Log On


   



Question 300252: At a college, 6 out of 8 students are sophomores. If 9 students are surveyed, find a) the mean b) the variance c)the standard deviation d) the probability that exactly 3 of the 9 are sophomores e) the probability that at most 3 are sophomores f) the probability that at least 5 are sophomores?
I am very pressed for time I have to hand in my assignment today at 2pm can someone please help me out? i really appreciate it.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Same advice as before. Start earlier.