Question: In October 1945 the Gallup organization asked 1487 randomly sampled
In October 1945, the Gallup organization asked 1487 randomly sampled Americans, “Do you think we can develop a way to protect ourselves from atomic bombs in case other countries tried to use them against us?” with 788 responding yes. Did a majority of Americans feel the United States could develop a way to protect itself from atomic bombs in 1945? Use the α = 0.05 level of signiﬁcance.
Answer to relevant QuestionsIn 2001, 23% of American university undergraduate students had at least one tattoo. A health practitioner suspects that the percent has changed since then. She obtains a random sample of 1026 university undergraduates and ...According to the research ﬁrm Toluna, the proportion of individuals who text while driving is 0.26. Suppose a random sample of 60 individuals are asked to disclose if they text while driving. Results of the survey are ...A random sample of n1 = 555 individuals results in x1 = 451 successes. An independent sample of n2 = 600 individuals results in x2 = 510 successes. Does this represent sufﬁcient evidence to conclude that p1 ≠ p2 at the ...(a) Compute di = Xi - Yi for each pair of data. (b) Compute d-bar and sd. (c) Test the hypothesis that µd ≠ 0 at the α = 0.01 level of signiﬁcance. (d) Compute a 95% conﬁdence interval for the population mean ...The General Social Survey asked the following two questions of randomly selected individuals. • Do you favor or oppose the death penalty for persons convicted of murder? • Should it be possible for a woman to obtain a ...
Post your question