The Poisson random variable is a:
a. discrete random variable with infinitely many possible values.
b. discrete random variable with finite number of possible values.
c. continuous random variable with infinitely many possible values.
d. continuous random variable with finite number of possible values.
Q. 2The Sutton police department must write, on average, 6 tickets a day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with a mean of 6.5 tickets per day. Interpret the value of the mean.
a. The mean has no interpretation.
b. The expected number of tickets written would be 6.5 per day.
c. Half of the days have less than 6.5 tickets written and half of the days have more than 6.5 tickets written.
d. The number of tickets that is written most often is 6.5 tickets per day.
Q. 3Which of the following cannot have a Poisson distribution?
a. The length of a movie.
b. The number of telephone calls received by a switchboard in a specified time period.
c. The number of customers arriving at a gas station in Christmas day.
d. The number of bacteria found in a cubic yard of soil.
Q. 4In a Poisson distribution, the mean and standard deviation are equal.
Indicate whether the statement is true or false
Quick Reply
