Question: Answer please? The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 32.2 seconds

Answer please?

The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 32.2 seconds and a standard deviation of 5.5 seconds. a) What is the probability that a randomly chosen student completes the activity in less than 27.9 seconds? b) What is the probability that a randomly chosen student completes the activity in more than 38.5 seconds? c) What proportion of students take between 27.5 and 35.6 seconds to complete the activity? d) 95% of all students finish the activity in less than seconds

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