1. A random sample of 500 teenagers were grouped in the following way: ages 13–14, 15–17, and 18–19. Each teenager was asked to record the number of Facebook friends each had. Is there sufficient...

1. A random sample of 500 teenagers were grouped in the following way: ages 13–14, 15–17, and 18–19. Each teenager was asked to record the number of Facebook friends each had. Is there sufficient evidence to infer that there are differences in the number of Facebook friends between the three teenage groups?

2. Deskbound secretaries were employed in this experiment. Clear-lidded candy dished filled with 30 Hershey’s Kisses were placed in three different locations. The first location was the secretary’s desk, the second was the top-left drawer in the secretary’s desk, and the third was on the top of a file cabinet 6 feet from the secretary’s desk. After 1 week, the number of Kisses consumed was counted. Do the data allow us to infer that the number of Kisses differed by location?