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A poll printed the results of a survey of 880Americans focusing on their perception of the...

A poll printed the results of a survey of 880Americans focusing on their perception of the quality of Japanese products. It has been observed that the sentiment towards Japanese products has actually improved over time. Is there sufficient evidence to conclude that American sentiment towards Japanese products changed from 1999 to 2005?

Opinion 1999 2005
Good to Excellent 24% 28%
Average 27% 40%
Below Average 18% 3%
No Opinion 31% 29%

Step 8 of 10 :  Find the critical value of the test at the 0.05 level of significance. Round your answer to three decimal places.

Step 9 of 10: Make the decision to reject or fail to reject the null hypothesis at the 0.05 level of significance.

Step 10 of 10: State the conclusion of the hypothesis test at the 0.05 level of significance.

Solutions

Expert Solution

Let us denote the difference

d - score in 1999 - score in 2005

Conclusion : There is not sufficient evidence to conclude that American sentiment towards Japanese products changed from 1999 to 2005

milcah answered 7 months ago
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