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3.6 Real-Life Application of Normal Distributions

Applying Normal Distributions in Real Life

  • Normal distribution is used to model many things in real life as it is a very reasonable model. Therefore, knowing how to apply the knowledge of normal distributions in real life problems is important.


The time taken to complete a logical reasoning task is normally distributed with a mean of 55 seconds and a standard deviation of 8 seconds. Keeping the answer as accurate to 4 d.p.,

a) Find the probability that that a randomly chosen person will take less than 50 seconds to complete the task.

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