A hypothesis test is performed, and the P-value is 0.03. True or false: a) H0 is rejected at the 5% level. b) H0 is rejected at the 2% level. c) H0 is not rejected at the 10% level.

A hospital director is told that 55% of the treated patients are insured. The director wants to test the claim that the percentage of insured patients is less than the expected percentage. A sample of 310 patients found that 155 were insured. At the 0.02 level, is there enough evidence to support the director's claim? Answer There is sufficient evidence to support the claim that the percentage of insured patients is less than 55 % . ○ There is not sufficient evidence to support the claim that the percentage of insured patients is less than 55 %. Tables Keypad Keyboard Shortcuts

a) Verify that the 95% CI for the difference in the proportions of female Hispanic drivers in the two citieswho wear seat belts pNY − pBT is (0.149, 0.353). Show your computation. b) Determine if the following statements are true or false, and explain your reasoning if you identify thestatement as false.i. There was strong evidence that pNY > pBT.ii. 95% of random samples of 220 female Hispanic drivers in New York City and 117 female Hispanicdrivers in Boston will yield differences in sample proportions between 14.9% and 35.3%.iii. A 90% confidence interval for pNY − pBT would be wider.iv. A 95% confidence interval for pBT − pNY is (−0.353, −0.149).

Data for a certain community show that 18​% of the adult residents are German. Suppose 74 people are called for jury duty and only 12 of them are German. Does this apparent underrepresentation of Germans call into question the fairness of the jury selection​ system? Explain.   Write appropriate hypotheses.   H0​: ▼  p not equals 18 %p≠18% p equals 18 %p=18% p greater than 18 %p>18% p less than 18 %p<18% HA​: ▼  p equals 18 %p=18% p not equals 18 %p≠18% p greater than 18 %p>18% p less than 18 %p<18%   The test statistic is z=_______________ ​(Round to two decimal places as​ needed.)   The​ P-value is _____________________ ​(Round to three decimal places as​ needed.)   State your conclusion assuming a​ P-value smaller than 0.05 is significant.