Exercise

Question 8

How many observations are in the subset under23_and_smoke that you created in the previous exercise, i.e. how many people in the sample are under the age of 23 and have smoked at least 100 cigarettes in their lifetime?

Note: The subset you created is already loaded.

Instructions

50 XP

Possible Answers

620
771
7,244
10,436
17,591

Take Hint (-15 XP)