The amount of time to complete a physical activity in a PE class is normally distributed with a mean of 37.3 seconds and a standard deviation of 5.5 seconds. Round answers to 4 decimal places. a) What is the probability that a randomly chosen student completes the activity in less than 32.1 seconds? b) What is the probability that a randomly chosen student completes the activity in more than 43.5 seconds? c) What proportion of students take between 33.7 and 40 seconds to complete the activity? d) 85% of all students finish the activity in less than seconds.
The amount of time to complete a physical activity in a PE class is normally distributed with a mean of 37.3 seconds and a standard deviation of 5.5 seconds. Round answers to 4 decimal places. a) What is the probability that a randomly chosen student completes the activity in less than 32.1 seconds? b) What is the probability that a randomly chosen student completes the activity in more than 43.5 seconds? c) What proportion of students take between 33.7 and 40 seconds to complete the activity? d) 85% of all students finish the activity in less than seconds.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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