If the random variable X as a mean of \mu and a variance of \sigma^2 what is the $P((X - \mu)^2 < 2\sigma)$: ? less that equal to 1/4 ? greater than or equal to 3/4 ? cannot tell ? equal to 5/4
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The standard deviation is the square root of the variance. So, if the variance is , then the standard deviation is . Show more…
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