In a survey of 100 people who had recently purchased motorcycles, data on the following variables were recorded: Gender of purchaser, Brand of motorcycle purchased, Number of previous motorcycles owned by purchaser, Telephone area code of purchaser, Weight of motorcycle as equipped at purchase. Which type of graphical display would be an appropriate choice for summarizing the brand of motorcycle.

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?