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Normal Distribution P(X less than x)

Video Lesson (Stat-Prob)

 Video Tutorial: Normal Distribution P(X less than x)


In this free statistics video tutorial, the teacher will walk you through an example how to work out probabilities from a normal distribution. A battery has a lifetime which is normally distributed with a mean of 62 hours and a standard deviation of 3 hours. What is the probability of a battery lasting less than 68 hours?