The lifetime of all the batteries produced by a certain company in a year have a distribution that is symmetric about the mean m. If the distribution has a standard deviation of d, what percentage of the distribution is greater than m+d?
1) 68% of the distribution lies in the interval from m-d to m+d inclusive.
2) 16% of the distribution is less than m-d.
1) 68% of the distribution lies in the interval from m-d to m+d inclusive.
2) 16% of the distribution is less than m-d.
