Two standard deviations about the mean is the mean +/- 2 standard deviations.
For this problem that would be 26.2 +/- 2*19.6
Which is 26.2 - 39.2 and 26.2 + 39.2.
Which is -12.7, 65.7
Mariana M.
asked • 03/07/21Standard Deviation
A random variable is normally distributed with the mean 26.2 and a standard deviation 19.6. what value is 2 standard deviations below the mean?
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