a. Find the probability of getting exactly 1 girl in 8 births. b. Find the probability of

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a. Find the probability of getting exactly 1 girl in 8 births.
b. Find the probability of getting 1 or fewer girls in 8 births.
c. Which probability is relevant for determining whether 1 is a significantly low number of girls in 8 births: the result from part (a) or part (b)?
d. Is 1 a significantly low number of girls in 8 births? Why or why not?
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children.
Number of Girls x P(x)
0.................................0.004
1.................................0.031
2.................................0.109
3.................................0.219
4.................................0.273
5.................................0.219
6.................................0.109
7.................................0.031
8.................................0.004
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Mathematical Interest Theory

ISBN: 9781470465681

3rd Edition

Authors: Leslie Jane, James Daniel, Federer Vaaler

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