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Mathematics, 21.05.2021 17:50, bob5266
A researcher is going to estimate the average typing speed of students of a college. He selects a random sample of 20 students and finds the average typing speed of 70 wpm and the standard deviation of 5 wpm. Estimate the margin of error of the 90% confidence interval of a student's average typing speed. Express your answer using THREE decimal places.
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