Question: H 0 : p A = 0.4, p B = 0.2, and p C = 0.4 H a : The population proportions are not p

H 0: p A = 0.4, p B = 0.2, and p C = 0.4
Ha :

The population proportions are not

p A = 0.4 , p B = 0.2 , and p C = 0.4

A sample of size 200 yielded 20 in category A, 100 in category B, and 80 in category C. Use = .01 and test to see whether the proportions are as stated in H0 . Use Table 12.4.

a. Use the p-value approach.

2 = (to 2 decimals)

The p-value is less than .005

Conclusion: Conclude the proportions differ from 0.4, 0.2, and 0.4.

b. Repeat the test using the critical value approach.

2 .01 =9.210 (to 3 decimals)

Conclusion: Conclude the proportions differ from 0.4, 0.2, and 0.4.

Need help do not worry about the table of 12.4 i already figured that part out but I need help on Part A

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