The 400-meter race times at a state track meet are normally distributed with a mean of 52.71 seconds and a standard deviation of 3.8 seconds. Using the Standard Normal Probabilities table, what is the approximate probability that a runner chosen at random will have a 400-meter time less than 53.4 seconds? 0.8186 0.2451 0.4286 0.5714

The 400-meter race times at a state track meet are normally distributed with a mean of 52.71 seconds and a standard deviation of 3.8 seconds. Using the Standard Normal Probabilities table, what is the approximate probability that a runner chosen at random will have a 400-meter time less than 53.4 seconds? 0.8186 0.2451 0.4286 0.5714

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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0.5714

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