Author Question: Which of the following experiments can be modeled by the Poisson distribution? a. The number of ... (Read 78 times)

WWatsford · **on:** Jul 24, 2018

Which of the following experiments can be modeled by the Poisson distribution?
a. The number of calls received by a switchboard during a given period of time.
b. The number of bacteria per small volume of fluid.
c. The number of customer arrivals at a checkout counter during a given minute.
d. The number of customer arrivals at a checkout counter during a given hour.
e. All of these.

Question 2

Which of the following statements is false regarding the assumptions for inferences about the linear correlation coefficient?
a. The set of (x, y) ordered pairs forms a random sample.
b. The y values at each x have a normal distribution.
c. Inferences about the linear correlation coefficient use the t-distribution with (n 1) degrees of freedom.
d. None of the above.