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Jlenok [28]
3 years ago
13

The Smith family was one of the first to come to the U.S. They had 8 children. Assuming that the probability of a child being a

girl is .5, find the probability that the Smith family had: (do not round your answers)
Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer: Hello some part of your question is missing below is the missing part

Missing question:  Find the probability that the Smith family had at least 6 girls?

answer : 0.1406

Step-by-step explanation:

Number of children = 8

probability of a child being a girl ( success ) = 0.5  (

P( boy ) ( q ) = 1 - 0.5 = 0.5

P( at least 6 girls ) = p(k = 6 ) + p(k = 7 )

                              = 0.109375 + 0.03125 ≈ 0.1406

( using Binomial probability Calculator )

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The resulting polynomial when 5x -6 is subtracted from 3x² -6x +2 is; 3x² -11x +8.

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It follows from the task content that the polynomial 5x -6 is to be subtracted from 3x² -6x +2.

Hence, the subtraction goes thus; 3x² -6x +2 -(5x-6).

Hence, 3x² -6x +2 -5x+6

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