Exam 4: Displaying and Comparing Qualitative Data

Which two events are most likely to be independent?

Studying Assume that 75% of the AP* Stat students studied for this test. If 40% of those who study get an A, but only 10% of those who don't study get an A, what is the probability that someone who gets an A actually studied for the test?

A young boy is fishing off the end of a dock. He estimates that for one out of every 15 times he casts his line, he gets at least a nibble from a curious fish. He is going to cast his line 50 times before he switches to toad hunting. -Suppose that our fearless fisherman goes out early one morning and casts a total of 250 times. What are the mean and standard deviation of the number of times he should receive a nibble on his line?

What is the probability there is exactly 1 jumbo among the first 6 cones sold by the ice cream stand in #7?