Assume that the following samples are independent. In a random sample of 400 women, 47% favored health care reform. In a random sample of 300 men, 36% favored health care reform. Construct a 98% confidence interval for the difference between the population proportions p1 − p2 . Based on your interval, is there a significant difference between men and women’s opinions on health care reform? Explain. Calculator function:

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.