Question

webwork/math243spring-mcginnis / week_10b_-_ch23_comparing_two_proportions / 3 Week 10b - Ch23 Comparing Two Proportions: Problem 3 Previous Problem List Next (1 point) Independent random samples, each containing 70 observations, were selected from two populations. The samples from populations 1 and 2 produced 48 and 36 successes, respectively. Test Ho: P1-P) = 0 against H.: 01-P). Use a = 0.08. (a) The test statistics ems b) The P-value is (c) The final conclusion is A. We can reject the pull hypothesis that (1-P) and accept that (p. - p) 0. B. There is not sufficient evidence to reject the null hypothesis that (1-P) = 0 Notes You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem times You have unlimited attempts remaining Email Instructor 50 dy & 7 9 0 8

Answer 1

X₂=48 x=36 n = 70 M = 70 Pi - X-48 ni 70 =0.6857 Pa=XZ - 36 70 = 0.5143 na XqtX2 na tha 48736 70+70 84 140 0.6 SoE PCI-P (+ tha 0-6C10-6) = 70 1/20 lj 0.0828 a) Za statistic = Burke .S.E =0.6857-0-5143 0.0828 test Statistic 2.07 b ) - p-value 2p(z Z>2007) =2(0.0192) = 10.0384 c) l=0.08 since p-value <a So, we reject null flypothesis Choice A)

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