Author Question: Which of the following is true regarding properties of a Poisson random variable? a. All of these ... (Read 60 times)

fox · **on:** Jun 24, 2018

Which of the following is true regarding properties of a Poisson random variable?
a. All of these answers are properties of a Poisson random variable.

b. The mean and variance of a Poisson random variable are the same.

c. The probability distribution for a Poisson random variable is a good model for data that represent the occurrence of a specified event over time.

d. The occurrence of an event during one period does not change the probability of an event occurring in some later period.

Question 2

Angela is importing a string of data that includes five-digit zip codes for 500 cities. This text file is considered:
a. neither fixed nor delimited
b. fixed or delimited
c. delimited
d. fixed width