Among n babies born in a certain city, 51% were boys. Use a goodness-of-fit test to test the hypothesis that the true probability of a boy is 0.5. (hint: consider both boys and girls for the test) If n = 1000, what is the expected frequency of girls? What is the value of the chi-square test statistic (Xs2)?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Among n babies born in a certain city, 51% were boys. Use a goodness-of-fit test to test the hypothesis that the true probability of a boy is 0.5. (hint: consider both boys and girls for the test)
If n = 1000, what is the expected frequency of girls?
What is the value of the chi-square test statistic (Xs2)?
It is needed to test, whether the true probability of a boy is 0.5.
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