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3 years ago

4x when x = 3/4 (I really need help)

Mathematics

1 answer:

hoa [83]3 years ago

8 0

3/4 is 0.75 as a decimal so 4 x 0.75 = 3

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Suppose the probability that a softball player gets a hit in any single at-bat is 0.300. Assuming that her chance of getting a h

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Answer:

$P(X=4)=(1-0.3)^{4-1} 0.3 = 0.103$

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Step-by-step explanation:

Previous concepts

The geometric distribution represents "the number of failures before you get a success in a series of Bernoulli trials. This discrete probability distribution is represented by the probability density function:"

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Let X the random variable that measures the number os trials until the first success, we know that X follows this distribution:

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Solution to the problem

For this case we want this probability

$P(X=4)$

And using the probability mass function we got:

$P(X=4)=(1-0.3)^{4-1} 0.3 = 0.103$

The probability that she will not get a hit until her fourth time at bat in a game is 0.103

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