3 years ago

How many ways can two students be chosen from a group of four? 4 6 14 10

Mathematics

1 answer:

taurus [48]3 years ago

8 0

Answer:

Step-by-step explanation:

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leva [86]

Answer:

$P(X=7)$

And using the probability mass function we got:

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Step-by-step explanation:

Let X the random variable of interest, on this case we now that:

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Where (nCx) means combinatory and it's given by this formula:

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And using the probability mass function we got:

$P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271$

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3 years ago

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spin [16.1K]

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