According to flightstats.com American airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 20 flights were randomly selected and the number of on-time? Find and interpret the probability that exactly 12 flights are on time Find and interpret the probability that fewer than 12 flights are on time Find and interpret the probability that least than 12 flights are on time Find and interpret the probability that 10 and 12 flights inclusive are on time

An urn contains 5 red balls, 3 green balls. Draw 8 balls without replacement. What is the probability that the 3rd ball is red and the seventh a green one? Give your answer up to two decimals

An AP stats class has 25 Senior and 5 Juniors. There are 22 total students in National Honor Society (20 Seniors and Juniors). Create a two-way table and a Venn Diagram that represents this situation. Then find the probability of choosing a student that is a senior or National Honor Society member.

Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of exactly two boys in ten births. Round the answer to the nearest thousandth.

An exam consists of six true or false questions. Find the probability that a student taking the exam can get 5 or more correct just by guessing.

Approximately 2 percent of Americans ages 50-60 have lung cancer. A patient with lung cancer has a 91 percent chance of a positive test. A patient without lung cancer has a 8 percent chance of a positive test (a false positive result). Complete the table below, then answer the questions below the table. Give all answers as decimals to 4 decimal places.   Positive test result Negative test result Total Has lung cancer          Does not have lung cancer          Total         What is the probability a patient has lung cancer given that she just had a positive test?     Give answer as decimals to 4 decimal places.

A bag contains 5 red, 6 white, and 4 blue marbles. If two marbles are chosen at random with no replacement. What is the probability that they are both red?  What is the probability that one is white and the other is red? *write your answer in decimal form, round to the nearest 4 decimal place

Larry and Curly decide to have a chess match. The probability of Larry winning is 0.4. Each time Larry wins, he gains confidence and the probability of winning the next game increases by 0.1. Each time he loses, his confidence goes down and his probability of winning the next game decreases by 0.05. Determine the probability that in a three game match Larry wins at least two games.   please write clearly thank you.

A number cube is rolled three times in a row. Find the probability it will on land a 2 on the first roll, a 3 on the second roll, and a number greater than 5 on the third roll

If 14 people are randomly​ selected, find the probability that no 2 of them have the same birthday. Ignore leap years. The probability that 14 people have different birthdays is