Exercise 1227 a Using a 05 level of significance conduct a h

{Exercise 12.27}

a. Using a .05 level of significance, conduct a hypothesis test to determine if the population proportion of good parts is the same for all three shifts.

Choose correct answer from above choice
_________________

Ha: _________________   

The p-value is _________________ .

What is your conclusion?
_________________

b. If the conclusion is that the population proportions are not all the same, use a multiple comparison procedure to determine how the shifts differ in terms of quality? Round your answers to two decimal places.

What shift or shifts need to improve the quality of parts produced?
_________________

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Solution