Karen's collection of compact disc collection has a mean number of songs of 13.1 with a standard deviation of 1.2 songs. What is the probability of Karen selecting a compact disc at random from her collection that has exactly 12 songs?

A bowler believes he bowls a better score during his second game than his first game 74% of the time. Assuming he is right, what is the probability that out of his next 25 pairs of games, he will be correct between 16 and 20 times? Interpret the range of values to be between 16 and 20, not including the 16 and 20.

A fitness center collects data on its members and discovers the mean number of visits by its members per year is 46.4 with a standard deviation of 13.7. What is the probability a member will come less than 10 times in a year?