Managerial statistics

Chapter 6 Discrete Random Variables 1. The information below is the number of daily emergency assists made to skiers by the volunteer ski team at a Ski resort. Number of Calls Frequency 8 W N - O 22 9 4 1 Total 50 Required a. Convert this information on the number of calls to a probability distribution b. Is this an example of a discrete or continuous probability distribution? c. What is the mean number of emergency assists per day? d. What is the standard deviation of the number of assists made daily? 2. Assume binomial distribution where n = 3 and p = 0.6. Determine the mean and standard deviation of the distribution. 3. In a binomial situation n = 4 and p = 0.25. Determine the probabilities of the following events: a. X = 2 b. x =3 C. x22 d. x