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Jboone
21.06.2019 •
Mathematics
Find the missing factor. write your answer inexponential form.9^2=9^4×
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Ответ:
a) Probability that the next home run will be on his fifth at-bat = 0.0797
b) The expected number of at-bats until the next home run = 6.25
Step-by-step explanation:
Let's take X as the number of hits needed for the next home run.
Given, P = 0.16
X~ GEOM. (P = 0.16)
For the probability main function of X, we have
P(X = x) = (1 - P)ˣ⁻¹ p; x = 0, 1, 2, 3....
a) For the probability that the next home run will be on his fifth at-bat.
P(X = 5)
(1 - 0.16)⁵⁻¹ (0.16)
= 0.07965942 ≈ 0.797
Probability that the next home run will be on his fifth at-bat = 0.0797
b) The expected number of at-bats until the next home run?
Let's use:
= 6.25
The expected number of at-bats until the next home run = 6.25