For the data in Exercises 19–24:

  1. Find the sample size .
  2. Calculate the sample mean .

Question 3.21

21. A sample from the motor vehicle theft data in Exercise 15 is as follows.

Country Theft rate
Italy 208.0
USA 167.8
Greece 100.2

3.1.21

(a) 3 (b) 158.67 motor vehicles stolen per 100,000 residents