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A composition teacher wishes to see whether a new gr grammatical errors her students make when writing a The data from a sample of

A composition teacher wishes to see whether a new gr grammatical errors her students make when writing a The data from a sample of 6 students are shown below Student 1 2 3 Errors 12 9 0 Before Errors 9 6 1 After a) What is the 95% confidence interval for errors BEFO

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