Question

A group surveyed a mix of people below and above 40 years old about whether or not they visit a dentist once a year. This table gives the survey results.

Visit Dentist Yearly Don’t Visit Dentist Yearly
Below 40 8 22
Above 40 17 13

Which table shows the relative frequency of people above 40 years old who do not visit a dentist once a year? Round your answers to the nearest hundredth.

Answer 1

Answer: is D

Visit Dentist Yearly Don’t Visit Dentist Yearly

Below 40 0.27 0.73

Above 40 0.57 0.43

Work: 8+22=30 17+13=30 turn into a fraction then simplify to get answer;

22/30 simp= 73.0 (0.73)

13/30 simp= 43.0 (0.43)

8/30 simp= 26.667 (0.27)

17/30 simp= 56.667 (0.57)

Answer 2

Answer with Step-by-step explanation:

Visit Dentist Yearly Don’t Visit Dentist Yearly

Below 40 8 22

Above 40 17 13

Relative frequency of people above 40 years old who do not visit a dentist once a year

=Number of people above 40 years old who do not visit a dentist yearly/Number of people above 40

=13/(17+13)

=13/30

=0.43

Hence, Relative frequency of people above 40 years old who do not visit a dentist once a year is:

0.43