For a science class, David recorded the daily high temperatures for five days. His calculations showed that the mean and median temperatures for the five days were the same. Which set of data supports David's calculation? 1. (42°, 40°, 44°, 39°, 45°)

2. (42°, 39°, 38°, 44°, 46°)

3. (42°, 39°, 38°, 45°, 47°)

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?