In a survey of 1000 adult Americans, 45.4% 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 45.4% is based only on a sample and that 45.4% 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. Is the marketing manager correct in his claim? Provide statistical evidence to support your answer. For purposes of this exercise, assume that the sample can be considered as representative of adult Americans. Test the relevant hypotheses using ? = 0.05.   Find the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z= P-value =

Q: b. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: Given : Sample size : n=76 Number of successes : x=21 We are conducting a study if the proportion of…

Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: In a survey of 1,005 adult Americans, 46.9% indicated that they were somewhat interested or very…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.3 Alternative hypothesis:…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: Solution: State the hypotheses Null hypothesis: That is, the proportion of stocks that went up is…

Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

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Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: The test statistic for this sample is, Thus, the test statistic is 1.022.

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