MATH 221 W2 Questions with Correct Answers

A random number generator is used to select a number from 1 to 100. What is the probability of selecting an even number? Correct Answer 0.50 What is the sample space of rolling two four-sided die? Correct Answer (1,2)(1,3)(1,4)(2,2)(2,3)(2,4)(3,4)(4,4) Consider the table below Response (number of cats owned); None One, Two, Three, Four or more Frequency; 659, 329, 52, 13, or 8 What is the probability that the next person asked has four or more cats? Correct Answer Less than 1% Consider the table below Age Group; 18-29, 30-39, 40-49, 50-59, 60-69, 70 and over Frequency; 9831, 7845, 6869, 6323, 5410, 5279 What is the probability that the next person chosen will be in the 50-59 or 60-69 age groups? Correct Answer 28.2% According to company records, the probability that a dishwasher will need repairs during its first six years is 0.09. This is an example of which type of probability? Correct Answer Empirical probability Consider the table below. Age Group; 18-29, 30-39, 40-49, 50-59, 60-69, 70 and over Frequency; 9831, 7845, 6869, 6323, 5410, 5279 What is the complement of P(40-59), or P(40-59')? Correct Answer 68.3% You are selling your product at a three-day event. Each day, there is a 60% chance that you will make money. What is the probability that you will make money on the first two days and lose money on the third day? Correct Answer 0.144