The distribution lies within one of the standard of deviation of the mean so <span>68% </span>
The distribution lies within two of the standard of deviations of the mean so 95%
The distribution lies within three of the standard of deviations of the mean so 99.7%
65-39=26 so 26 employess dont have cellular phones. So 26/65 or in simplified form 2/5
The answer is: B
Hope this helped!
