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The lifetime of all the batteries produced by a certain company in a year has a distribution that is symmetric about the mean \(m.\) If the distribution has a standard deviation of \(d,\) what percent of the distribution is greater than \(m+d?\)
(1) \(68\) percent of the distribution lies in the interval from \(m-d\) to \(m+d,\) inclusive
(2) \(16\) percent of the distribution is less than \(m-d.\)
Answer: D
Source: GMAT Prep
(1) \(68\) percent of the distribution lies in the interval from \(m-d\) to \(m+d,\) inclusive
(2) \(16\) percent of the distribution is less than \(m-d.\)
Answer: D
Source: GMAT Prep
