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The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 35.8 seconds and

The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 35.8 seconds and a standard deviation of 5.7 seconds. a) What is the probability that a randomly chosen student completes the activity in less than 30.5 seconds? b) What is the probability that a randomly chosen student completes the activity in more than 42.2 seconds?

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