Part 3 of 4 (c) Find the probability that 12 or more of the flights were on time. The probability that 12 or more of the flights were on time is Part 4 of 4 (d) Would it be unusual for 13 or more of the flights to be on time? It (Choose one) be unusual for 13 or more of the flights to be on time since the probability is would would not

A bag contains 3 red marbles, 9 white marbles, and 15 blue marbles. You randomly select one marble from the bag. If it is red, you win $4. If it is white, you win $2. If it is blue, you lose $1. What is your expected value when playing this game? Round your answer to the nearest cent.

If 35% of cows in a herd have Mad Cow disease, and a rancher randomly selects 7 cows, what is the probability exactly 4 of them have Mad Cow disease? Round to one decimal place. 13.0% 4.7% 26.8% O 14.4%

200,000 lottery tickets are sold for $3 each. There is one jackpot prize of $50,000, 25 second prizes of $2000, and 100 third prizes of $40. Find the expected value of your profit when you buy a ticket. Round your answer to the nearest cent.

You toss a coin three times. If you toss heads exactly two times, you win $2. If you toss heads all three times, you win $8. Otherwise, you lose $3. What is the expected payout for one round of this game? Round your answer to the nearest cent. Enter an expected loss as a negative number.

You have 10 people with a cold and you have a remedy with a 20% chance of success. What is the chance that your remedy will cure at least one sufferer? O 0.107 O 0.268 0.624 O 0.893

In government data, a family consists of two or more persons who live together and are related by blood or marriage. Choose an American family at random and count the number of people it contains. Here is the assignment of probabilities for your outcome:Number of persons    2       3      4       5       6       7+Probability          0.42    0.23    0.21    0.09    0.03    0.02What is the probability that the family you choose has more than two people?

n a large population, 60 % of the people have been vaccinated. If 4 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated?Give your answer as a decimal (to at least 3 places) or fraction.