of Americans said they did not trust the media, In a 2017 poll of 231 adults -in
ID: 3324193 • Letter: O
Question
of Americans said they did not trust the media, In a 2017 poll of 231 adults -in2007, 46% Iideto suppor they did not trust the media. At the What type of test soraty Claim th mple proportion z-test oatievidenceely has changed since 20072 media. In a 2017 poll of 231 adults t the claim that the percentage of Americans that do not trust the media -0.07 level of significance, Is herorfully should be used in this 22. What should we do about the hypotheses? to A. Reject the null hypothesis B. Accept the null hypothesis C. Cannot reject the null hypothesis D. Reject the alternative hypothesis. A. B-sample Proportion z-test Two-sanpendent sample z-test independent sample z-test Twndependent sample t-test. etailed or two-tailed test? 23 = 0.07, what is the research conclusion? A. There is insufficient evidence to conclude that the percentage of Americans that do eater than A. Right-tailed B. Lefil-tailed not trust the media is not equal to 5.95% conclude r at the B. There is sufficient evidence to conclude that the percentage of Americans that do : Two-tailed and right-tailed er than o conclude r at the eater than wo-tailed and left-tailed Ell be the research hypotheses? not trust the media is not equal to 51.95% C. There is insufficient evidence to conclude that the percentage of Americans that do : p >0.52 vs A.no.n>0.52 vs H1: p =0.52 H1:p=0.52 not trust the media is not equal to 46% D. There is sufficient evidence to conclude H: p46 vs H:p>46 that the percentage of Americans that do not trust the media is not equal to 46%. o conclude r at the eater than H1:pExplanation / Answer
17) Option-B
18) Option-C
19) Option-D
20) z0.035 = 1.81
option-E is the correct answer.
21) The test statistic Z = (p - P)/sqrt (P * (1 - P)/n)
= (0.52 - 0.46)/sqrt (0.46 * 0.54/231)
= 1.83
option-E is the correct answer.
22) As the test statistic value is greater than the critical value (1.83 > 1.81), so the null hypothesis is rejected.
Option-A is the correct answer.
23) Option-D
24) At 97% confidence interval the critical value is z0.015 = 2.17
The upper boundary is
p + z0.015 * sqrt(P * (1 - P)/n )
= 0.52 + 2.17 * sqrt(0.46 * 0.54 /231)
= 0.52 + 0.071
= 0.591
Option-B is the correct answer.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.