The amount of time to complete a physical activity in a PE class is normally distributed with a mean of 39.8 seconds and

Question

The amount of time to complete a physical activity
in a PE class is normally distributed with a mean of
39.8 seconds and a standard deviation of 6.3
seconds. Round answers to 4 decimal places.
a) What is the probability that a randomly chosen
student completes the activity in less than 32.3
seconds? 
b) What is the probability that a randomly chosen
student completes the activity in more than 45.3
seconds? 
c) What proportion of students take between 34.6
and 44.9 seconds to complete the activity?
d) 80% of all students finish the activity in less than
 seconds.

Kunduz · Accepted Answer

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