Problem

Given that a random variable X follows a normal distribution with a mean μ=15 and variance σ2=25, find the standard deviation.

Answer

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Answer

Substituting the given variance into the equation, we get σ=25.

Steps

Step 1 :The standard deviation of a normal distribution is calculated as the square root of the variance, which is represented as σ.

Step 2 :Given the variance σ2=25, we can calculate the standard deviation as σ=σ2.

Step 3 :Substituting the given variance into the equation, we get σ=25.

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