Question

Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos." Of those polled, 482 were in favor, 401 were opposed, and 122 were unsure. A politician claims that people don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Exclude the 122 subjects who said that they were unsure, and use a 0.10 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5. What does the result suggest about the politician's claim? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.5 Hy: p > 0.5 O B. Ho: p=0.5 Hy: p<0.5 C. Ho: p=0.5 Hy:p#0.5 OD. Ho:p*0.5 Hy: p = 0.5

Answer 1

Hoi p=0.5 H, 18 +0.5 (Two dailed test) h: 4824401 - 883 x = 482 -105459 Sample Profor bion (P) = * = 48 - 0.5459-0.5 F = 2.7279 test statistic, ip Z = TPR (1-P) = 0.5x (1-0.5) 883 n B Z =2.13 P-value = 2 r Pr (7=2.73)] = [0.0063] fusing P-value] | Glculator The result is significant at P <*50-10 Since, p-value is less than the d=0010 So, ID Reject the Ho. There is a sufficient evidence to warrant rejection of the claim that the response are equivalent to a Coin toss

1. The Correed option is ♡ The result Suggest that the politicalat is wrong in claiming that the responges are random qusses equivalent to a Coin toss