Which of the following random variables is geometric? The number of digits in a randomly selected row until a 7 is found. The number of 7s in a row of 50 random digits. The number of tails when a coin is tossed 50 times. The number of diamond cards obtained in a seven-card deal-out of a shuffled deck of 52 cards. The number of 2s when rolling a die 5 times.

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?