Construct a 90 confidence interval for the population, Ask an Expert

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To test the claim that 60% of Americans will not buy products imported from Vietnam, 400 Americans were sampled, and 228 said they would not buy the imported products.

a) Use a 10% level of significance and test the claim.

b) Construct a 90% confidence interval for the population proportion p. Does your result agree with your conclusion in part (a)?

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