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Are more than 80% of American's right-handed? In a sample of 100 Americans, 87 were right-handed
Are more than 80% of American's right-handed? In a sample of 100 Americans, 87 were right-handed.
a. Test the hypothesis at a level of significance, α = .05. Also, calculate the p-value.
b. Construct the 95% confidence interval for the true proportion.
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