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Mathematics 13 Online
OpenStudy (anonymous):

Tommy Teacher wants to analyze the weights of the students at his school. He knows the weight of the students is normally distributed so he can use the standard normal distribution. He measures the weight of 100 randomly selected students in the school. He finds the mean is 80 pounds and the standard deviation is 8 pounds. Out of 100 students, how many should weigh between 64 and 96 pounds?

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