11. In professional tennis for 2017 men challenged 2100 calls and 1105 of them were changed. While women challenged 1309 calls and 625 of them were changed. Find a 95% confidence interval for the difference in changed calls for men and women.
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.
11. In professional tennis for 2017 men challenged 2100 calls and 1105 of them were changed. While women challenged 1309 calls and 625 of them were changed. Find a 95% confidence interval for the difference in changed calls for men and women.
12. For problem # 11 conduct a hypothesis test to test the claim that men get more calls changed than women. Use a significance level of .05.
14. Find a 99% confidence interval for the difference in males and females BMI using the following sample data.
Female BMI: n=70, mean=29.1, Sx=7.39.
Male BMI: n=80, mean=28.38, Sx=5.37.
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