Each month the Bureau of Labor Statistics reports the number of people (in thousands)employed in the United States by age.The accompanying frequency distribution shows the results for August 2011. 
a.Construct a relative frequency distribution.What proportion of workers is between 20 and 24 years old?
b.Construct a cumulative relative frequency distribution.What proportion of workers is younger than 35 years old?
c.Construct a relative frequency histogram.
Definitions:
Menopause
A natural biological process in women marking the end of reproductive years, characterized by the cessation of menstruation.
Ovulation
The process in the menstrual cycle where a mature ovarian follicle releases an egg.
Menstruation
The monthly shedding of the uterine lining, which has thickened in preparation for the implantation of a fertilized egg.
Menopause
The period in a woman's life, typically between the ages of 45 and 55, when menstruation ceases, marking the end of reproductive ability.
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