It is thought that not as many Americans buy presents to celebrate Valentine s Day...
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It is thought that not as many Americans buy presents to celebrate Valentine s Day anymore A random sample of 4000 Americans yielded 2200 who bought their significant other a present and celebrated Valentine s Day Estimate the true proportion of all Americans who celebrate Valentine s Day using a 90 confidence interval Express the answer in the form p E and round to four decimal places OA 0 5500 0 0129 OB 0 4375 0 0129 OC 0 5500 0 4048 OD 0 4375 0 4048
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