Atotal population of 4,185 people are being observed in a five-year study measuring incidence of prostate cancer.

• 38 prostate cancer cases were confirmed at the end of year 1. •

17 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 2. •

52 additional cases were confirmed at the end of year 3. •

19 additional cases were confirmed and 10 men had withdrawn from the study at the end of year 4. •

30 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 5.

what is the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years?

The incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years is 7.469

Step-by-step explanation:

Consider the provided information.

It is given that 38 prostate cancer cases were confirmed at the end of year 1 and the total population was 4,185.

As we need to find the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years, thus 4185/1000 = 4.185

Thus, the incident rate is: Number of new case/ population of study in 1000.

17 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 2. That means total population is 4185-5=4180

Thus, the incident rate is:

52 additional cases were confirmed at the end of year 3.

Thus, the incident rate is:

19 additional cases were confirmed and 10 men had withdrawn from the study at the end of year 4.

Thus, the incident rate is:

30 additional cases were confirmed and 5 men had withdrawn from the study at the end of year 5.

Thus, the incident rate is:

The average expressed in terms of 1000 person-years

Hence, the incidence rate of prostate cancer in this population, expressed in terms of 1000 person-years is 7.469

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: