During an average 12-month period, 15% of Americans attend live theater. I ask 10 people whether they have attended live theater in the past 12 months? I wonder about the probability that more than 2 of them have. What sort of probability distribution should I use?

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?