Question

In: Statistics and Probability

2. The marketing manager for an automobile manufacturer is interested in determining the proportion of new...

2. The marketing manager for an automobile manufacturer is interested in determining the proportion of new compact-car owners who would have purchased a GPS navigation system if it had been available for an additional cost of $300. The manager believes from previous information that the proportion is 0.30. Suppose that a survey of 200 new compact-car owners is selected and 79 indicate that they would have purchased the GPS navigation system. If you were to conduct a test to determine whether there is evidence that the proportion is different from 0.30, what conclusion could you reach? Please follow the hypothesis testing steps in arriving at a decision. You must show all the calculations in the spreadsheet.

Solutions

Expert Solution

assuming alpha = 0.05

(5) Conclusion

It is concluded that the null hypothesis Ho is rejected. Therefore, there  is evidence that the proportion is different from 0.30

at theα = 0.05 significance level.

orchestra answered 1 year ago
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