The _______distribution is used to measure the time that elapses between occurrences of an event, such as the time between 'hits' on an internet home page. Select one: a. exponential b. binomial c. uniform d. poisson

Assume that the amount of time until a kid gets bored and wants to leave a playground can be modeled using exponential distribution. Given that 5 kids leave a particular playground on average per hour, if a kid has already played 10 minutes there what is the probability he will have spent at least a total of 25 minutes before he leaves? OA. 0.2865 OB. 0,7135 OC 0.8755 OD.0.1245

The time between the arrival of electronic messages at your computer is exponentially distributed with a mean of two hours. What is the probability that you do not receive a message during a four-hour period? a. NONE O b. 0.8647 C. 0.3679 d. 0.1353

The time (in minutes) between telephone calls at an insurance claims office has the exponential probability distribution: f(x)=0.50e-0.50x              for x ≥ 0 What is the mean time between telephone calls? What is the probability of 30 seconds or less between telephone calls?  What is the probability of 1 minute or less between telephone calls?  What is the probability of 5 or more minutes without a telephone call?