1)Given a left tailed test and a = .05, find th critical Z value. Assume normal distribution apply.
2)Base balls droped 24 feet and bounced an average of 92.84 inches. sample test 42 new balls with a mean bounce height of 92.67 inches and a standard deviation of 1.79 inches. use 0.05 significance level. citical value of statistic is?
3)109,857 arrest. 29.1% were for drug offences. use 0.01 significance level to test that grug offence rate is equal to 30%. accept or reject hypothesis.
4)4276 house holds show that 4019 haf a telephone. the percentage is greater than 35%. use 0.01 signif level. The critical value is?
5)in a gallop poll of 1012 adults 9% said cloning should be allowed. use 0.05 signif level to test the claim that less than 10% of adults say cloning should be allowed. The citical value of the statistic is? and the value of the test statistic is?
6)a data including the heights of parents of 20 males. difference in height is found by subtracting mother height form father height. the resut is a list 20 valuss with a mean of 4.4 inch and standard deviation of 4.2 inch. use 0.01 singnif level to test claim the mean difference is greater than 0. accept or reject hypoth?