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(Exhibit 2) In a quality control test of parts manufactured at Dabco Corporation, an engineer sampled parts produced on the first, second, and third shifts.

(Exhibit 2) In a quality control test of parts manufactured at Dabco Corporation, an engineer sampled parts produced on the first, second, and third shifts. The research study was designed to determine if the population proportion of good parts was the same for all three shifts. Sample data follow.

Production Shift

Quality

First

Second

Third

Good

285

368

176

Defective

15

32

24

Using a 0.05 level of significance, conduct a hypothesis test to determine if the population proportion of good parts is the same for all three shifts.

Refer to Exhibit 2. Write the null hypothesis and compute the p-value.

which one is correct

a. H0: p1=p2=p3, Less than 0.01

b. H0: p1=p2=p3=1/3, Less than 0.01

c. H0: p1=p2=p3, Between 0.01 and 0.025

d. H0: p1=p2=p3=1/3, Between 0.01 and 0.025

e. H0: p1=p2=p3, Between 0.025 and 0.05

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