Chapter 8.8, Problem 22HP

To determine

To find:The valid conclusion based on given information.

Answer to Problem 22HP

The correct conclusion is H.

Explanation of Solution

Given information:

According to a survey 90 physical trainers :

15 went for a run at least 5 times per week.

5 also swim during the week.

At least 25% of all trainers run and swim every week.

Conclusions:

F The report is accurate because 15 out of 90 is 25%.

G The report is accurate because 5 out of 15 is 33%, which is at least 25%.

H The report is inaccurate because 5 out of 90 is only 5.6%.

I The report is inaccurate because no one know if swimming exercising.

Calculation:

Consider that out of 90 physical trainers, 15 run five times in a week.

Out of them 15 trainers, 5 run and swim as well as.

Percentage of those who swim and run as well as out of 90.

  $\frac{5}{90}*100=5.56\%$

Therefore, the correct conclusion is H.