In a survey of consumers age 12 years and older, respondents were asked how many cell phones are in use in their household.  The results of the survey are summarized in the following table: Number of Cell Phones  in the Household Number of Households 0 211 1 288 2 366 3 144 4 or more 89  Answer the following: (Express your answer as fractions, or as decimals rounded to 4 decimal places) a) What is the probability that a randomly chosen household has 2 cell phones in use? b) What is the probability that a randomly chosen household has 4 or more cell phones in use? c) What is the probability that a randomly chosen household has fewer than 4 cell phones in use?

5. When a roulette wheel is spun a ball ends up on one of the 40 numbers located on it; 19 of the numbers are black, 19 are red and 2 are green. Find the following: a. the probability that the ball lands on a green number. b. the probability that the ball lands on a number that is not red.

United Airlines' flights from Denver to Dallas are on time 90 % of the time. Suppose 5 flights are randomly selected, and the number of on-time flights is recorded.Round answers to 4 decimal places.a. The probability that exactly 3 flights are on time is .b. The probability that at most 4 flights are on time is .c. The probability that at least 4 flights are on time is .

Professor Ivy takes a poll of the nursing students and the engineering students and asks them if they think they should have to take a math class for their degree. Here are her results:   Yes No Total Nursing 304 121   Engineering 85 15   Total       Fill in the total cells in the table above. If Professor Ivy picks a random student from the poll to call back who voted yes, what is the probability they are a nursing student?  %   (enter answer as a percent rounded to the nearest tenth as needed) Professor Ivy picks a student at random from the poll to call back, what is the probability that the student will be a nursing student or that they voted no?   %   (enter answer as a percent rounded to the nearest tenth as needed)