1. While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.50 m and 6.50 m.

1. What is the probability that a randomly selected depth is less than 3.30 m?
2. What is the probability that a randomly selected depth is between 2.50 m and 5.00 m?
3. What is the expected value of the water depth?
4. What is the standard deviation of the water depth?