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Henry has collected data to find that the typing speeds for the students in a typing class has a normal distribution. What is the probability

Henry has collected data to find that the typing speeds for the students in a typing class has a normal distribution. What is the probability that a randomly selected student has a typing speed of less than 51 words per minute if the mean is 47 words per minute and the standard deviation is 4

words per minute? Use the empirical rule.

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