SOLUTION: Mimi just started her tennis class three weeks ago. On average, she is able to return 15% of
her opponent’s serves. Let random number X be the number of serves Mimi returns. As
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her opponent’s serves. Let random number X be the number of serves Mimi returns. As
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Question 872993: Mimi just started her tennis class three weeks ago. On average, she is able to return 15% of
her opponent’s serves. Let random number X be the number of serves Mimi returns. As
we know, the distribution of X is a binomial probability distribution. If her opponent serves
10 times, please answer the following questions:
1. What is the number of trials (n), probability of successes (p) and probability of failures (q),
respectively?
2. Find the probability that she returns at most 8 of the 10 serves from her opponent .
3. Find the mean and standard deviation for the probability distribution. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! 1) p = .15, q = .85, n = 10
2)P(x ≤ 8) = binomcdf(10, .15, 8) = .9999
3) mean = .15*10 = 1.5, SD = sqrt(1.5*.85)
