Question: From the previous question , the remaining 23,000 study participants with no clinically detectable hearing impairment were followed for 1 year. At the end of

  1. From the previous question, the remaining 23,000 study participants with no clinically detectable hearing impairment were followed for 1 year. At the end of the year, all 23,000 were tested. The results are presented below by age. [3 points]

Table 3. Persons with Clinically Detectable Hearing Impairment after one year

Age at Baseline

N

# New Hearing Loss

1-Year Risk (Yearly Rate)

40-49

7750

20

50-59

7000

22

60-69

5750

20

70-79

2500

30

TOTAL

23,000

92

  1. What is the probability of developing a clinically detectable hearing impairment after one year (overall and by age)?

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