Suppose we are interested in comparing female versus male class attendance. The following data is provided: ROUND TO FOUR DECIMAL PLACES Gender Female Male Sample Size 10 11 Average Attendance Percentage 88.5 86.75 Sample Standard Deviation 12.53 13.07 a. What is the 99% confidence interval for the difference between the average attendance between female and male? b. What is the test statistic for the difference for female and male? c. What is the p-value?

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.