SOLUTION: Hi, I'm trying to finish some Statistics homework and this is the last question for this chapter that I can't seem to get right, even with Pearson's question help. Thank you for yo

Algebra ->  Probability-and-statistics -> SOLUTION: Hi, I'm trying to finish some Statistics homework and this is the last question for this chapter that I can't seem to get right, even with Pearson's question help. Thank you for yo      Log On


   



Question 1116352: Hi, I'm trying to finish some Statistics homework and this is the last question for this chapter that I can't seem to get right, even with Pearson's question help. Thank you for your time.
Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. If 6 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
6C4*(0.54)^4*(0.46)^2=
0.2699
The expected value is 3.24, so 4 should be fairly common and 3 a little more common (it is 0.3065).