Identify the lower class limits$,$ upper class limits$,$

class width, class midpoints, and class boundaries for

the given frequency distribution. Also identify the

number of individuals included in the summary.

Age $($yr$)$ when

award was won Frequency

$20-2928$

$30-3933$

$40-49,12$

$50-59,3$

$60-696$

Identify the lower class limits$.$

$($Type integers or decimals. Do not round. Use ascending order.$)$