Answer to Question #88791 in Statistics and Probability for sachin

Question

A telephone company representative estimates that 20% of its customers have call-waiting service. To test this hypothesis, she selected a sample of 100 customers and found that 37% had call waiting. At 5% significance level, is there enough evidence to reject the claim? To give your conclusion,

a. Use the traditional method.

b. Use the p-value method.

c. Use the confidence interval method.

Answer 1

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