jQQuEstions v" p Belipt'03 Remember, that we only use the normal approximation to the binomial when we want to nd a probability value of a discrete random variable. So, it is important to be able to recognize the situations in which that is possible. Which of the following situations involve a discrete random variable? There may be more than one. Do not solve any of them. C} The average rainfall in Connecticut during, the month of November is 4.53 inches. Assuming November rainfall in Connecticut is normally distributed and there is a 50% chance of less than 3.5 inches of rain, estimate the standard deviation. [3 An experiment consists of rolling 10 six sided dice and counting the number of fours rolled. What is the probability that the number of fours rolled will be greater than 5? [:1 500 people were surveyed on the number of computers they have in their home. 87 reported having more than 3, 152 reported having 3, 122 reported having 2, 96 reported having 1, 25 reported having 0, and 18 did not report. If three of the surveyed people are selected at random, what is the probability of one of them having no computer at home? C] Southwest flight 1533 from Bradley International Airport to Baltimore-Washington International Airport has an average flight time of 1.137 hours with a standard deviation of 5.212 minutes. What is the probability flight 1533 will last between 1.1 and 1.2 hours