Category: probability quizzes

Question: In the context of economics, what is the primary characteristic of events that makes them suitable for modeling with…

Question: What does a covariance of zero between two random variables and indicate?A) and are independent.B) and are uncorrelated.C) and…

Question: What is the variance of a fair six-sided die roll?A) 2.5B) 3.5C) 2.9167D) 1.5 Question: If is a random…

Question: What is the expected value of a fair six-sided die roll?A) 2.5B) 3.5C) 4.5D) 5.5 Question: If is a…

Question 1:The time between arrivals of buses at a bus stop follows an exponential distribution with a mean of 10…

Question: If the probability of using Facebook is 0.6 and the probability of using Instagram is 0.5, and these events…

Question: A music streaming service offers songs in three genres: Pop, Rock, and Jazz. The probability of a song being…

What is the population in the context of a movie rating study?A) All movies ever madeB) All movie reviewersC) The…

Question: An engineer has 4 different types of screws and 3 different types of bolts. How many different combinations of…

Question 1: There are 4 different types of shirts and 3 different types of pants. How many different outfits can…