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\fQuestion 20 (1 point) An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number in the sample that had one or more accidents in the previous year. The results are shown below. Under Age of 18 Over Age of 18 Number having one or more accidents in the previous year 11 9 9 Sample size 50 30 We are interested in testing the hypothesis that the accident proportions differ between the two age groups against the null hypothesis that they do not differ. The pooled estimator of p is: .26 O.22 .25 O.30Question 22 (1 point) You are testing the null hypothesis that the population mean is equal to 200. What is the rule for rejecting the null hypothesis? O When the p-value is > a. When the p-value is s o/2 O When the p-value is 2 /2 When the p-value is s a Question 23 (1 point) In ANOVA, the degrees of freedom associated with the sum of squares error are:\f\f\f\f\f\f\f\f