A set of exam scores is normally distributed with a mean $=74$ and standard deviation $=6.$

$95\%$ of the data values lie between $0^8$ and $0^8$

$\%$ of the exam scores are between $68$ and $74.$

$\%$ of the exam scores are between $74$ and $86.$

$\%$ of the exam scores are between $80$ and $86.$

$\%$ of the exam scores are greater than or equal to $68.$