$($d$)$ Telephone interviews of $372$ employees of a large electronics company found that $65\%$ were dissatisfied with their working conditions.

$($e$)$ The average age of the $65$ students in Ms$.$ Hope's political science class is $21$ years $7$ months.

$($f$)$ Mark retired from competitive athletics last year. In his career as a sprinter, he had competed in the $100-$meters event a total of $328$ times. His average time for these $328$ races was $10\mathrm{.}25$ seconds.