Question

In a survey of 1,005 adult Americans, 45.7% indicated that they were somewhat interested or very interested in having web access in their cars. Suppose that the marketing manager of a car manufacturer claims that the 45.7 % based only on a sample and that 45.7% is close to half, so there is no reason to believe that the proportion of all adult Americans who want car web access is less than 0.50. s the marketing manager correct adult Americans. Test the relevant hypotheses using a 0.05. his claim? Provide statistical evidence to support your answer. For purposes of this exercise, assume that the sample can be considered representative State the appropriate null and alternative hypotheses. O Ho: p 0.50 versus H: p < 0.50 O Hoi p 0.50 versus H p 0.50 Ho p< 0.50 versus H: p 0.50 Ho p 0.50 versus H p0.50 O Hoi p 0.50 versus H: p 0.50 Find the test statistic and P-value. (Use a table or technology. Round your test statistic to two decimal places and your P-value to four decimal places.) P-value State the conclusion in the problem context. OReject H. We do not have convincing evidence that the proportion of all adult Americans who want car web access is less than 0.50. The marketing manager correct in his claim. Fail to reject Hn. We have convincing evidence that the proportion of all adult Americans who want car web access s less than 0.50. The marketing manager is not correct in his claim. O Fail to reject H We do not have convincing evidence that the proportion of all adult Americans who want car web access is less than 0.50. The marketing manager is correct in his claim. O Reject Ho We have convincing evidence that the proportion of all adult Americans who want car web access is less than 0.50. The marketing manager is not correct in his claim.

Answer 1

Given' f4077 O-47 50 1005 oPOSO Ys. HaP o.50 P-P O-457- 0. 50 Pall-p) d-50* Cl-05a) 1005 CK - 2.73 #CSe N-table O.0032 P-ralue Reject Ho we have convining oviden te thal the psoportien ef all adult fosemican who Dant car heb access is lesszthan 0-50 markeing managen is bot casrect the in bis clain