EBK BUSINESS STATISTICS
7th Edition
ISBN: 8220102743984
Author: STEPHAN
Publisher: PEARSON
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Q3 (D. A. Şaşmaz, Problem 9.23) – There is a common belief that usually one sex of
children (either boy or girl) run in the family, i.e. once a family have the first baby as a girl,
other children are expected to be girl as well, or vice virsa. Based on an observation on 320
families having 5 children, the sex of children (boys or girls) are given in the following table.
Do these results confirm that the probabilities of having girl or a boy in the same family are
equal at 5% and 1% significance levels?
a) Use normal approximation method to binomial distribution.
b) Use chi-square test.
Number of Boys/Girls
5B0G
4B1G
3B2G
2B3G
1B4G
OB5G
Number of families
18
56
110
88
40
Please show a step-by-step solution. Do not skip steps, and explain your steps. Write it on paper, preferably. Make sure the work is clear.
with my answer in screenshot 1 will you help me with the ones in screenshot 2 please
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