SOLUTION: Binomial Distribution: If anyone can answer this question, thank you so much! A bag contains 5 balls of which 2 are red. A ball is selected at a random. It's color noted and

Question 864262: Binomial Distribution:
If anyone can answer this question, thank you so much!
A bag contains 5 balls of which 2 are red. A ball is selected at a random. It's color noted and then replaced in the bag. This process is carried out 50 times. Find:
(a) the mean number of red balls selected.
answer: 20
(b) the standard deviation of the number of red balls selected.
answer: 3.4641
Thanks once again!
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
p(red) = 2/5, n = 50
m = = 20
sd = = 3.4641
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