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QUESTION
The mean time taken by all participants to run a road race was found to be 155 minutes with a standard deviation of 20 minutes.
minutes.
Using Chebyshev's theorem, find the percentage of runners who ran this road race in 115 to 195 minutes.Round your answer to the nearest integer.
115 and 195 are −2.00 and 2.00 standard deviations from mean. Thus, we needprobability that X is within atleast 2 standard deviations from mean.1Using chebyshev’s Inequality: P (|X − µ|...