SOLUTION: . A particular hair treatment program has caused hair growth in 70% of its users. A random sample of 20 users is obtained. Using the Binomial Probability Distribution, determine

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Question 459351: . A particular hair treatment program has caused hair growth in 70% of its users. A random sample of 20 users is obtained. Using the Binomial Probability Distribution, determine the following probabilities:
a) That exactly 15 experienced hair growth.
b) That less than 9 experienced hair growth.
c) That more than 12 experience hair growth.
d) That 15 or more experience hair growth.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
g=.7, n=.3
.
a)
20C15*g^15*n^5
=15504*.0047*.0024
=.1789
.
Ed