Concept explainers
a. If two people are selected at random, the probability that they do not have the same birthday (day and month) is
Explain why this is so. (Ignore leap years and assume 365 days in a year)
b. If three people are selected at random, find the probability that they all have different birthdays.
c. If three people are selected at random, find the probability that at least two of them have the same birthday.
d. If 2d people are selected at random, find the probability that at least 2 of them have the same birthday.
e. How large a group is needed in give a 0.5 chance of at least two people having the same birthday?
Want to see the full answer?
Check out a sample textbook solutionChapter 11 Solutions
Algebra and Trigonometry (6th Edition)
- Find the probability of each event. Drawing 5 orange cubes from a bowl containing 5 orange cubes and 1 beige cubesarrow_forwardFind the probability of each event. Rolling a sum of 11 on one roll of three dicearrow_forwardFind the probability of each event. Getting 2 red eggs in a single scoop from a bucket containing 5 red eggs and 7 yellow eggsarrow_forward
- If the spinner shown below is spun, find the probability of each event. Assume that the spinner never stops on a line. The spinner stops on orange.arrow_forwardDetermine if the statement is true or false. If the statement is false, then correct it and make it true. If the probability that you will graduate is 0.63, then the probability that you will not graduate is -0.63.arrow_forwardHow many different signals can be sent, when three flags are used, if two of the 9 flags are missing?arrow_forward
- If the spinner shown below is spun, find the probability of each event. Assume that the spinner never stops on a line. The spinner stops on red.arrow_forwardDetermine if the statement is true or false. If the statement is false, then correct it and make it true. If the probability of a couple of five girls is 132, then the probability of having five boys is 3132.arrow_forwardFalling Object An object with negligible air resistance is dropped from the top of the Willis Tower in Chicago at a height of 1451 feet. During the first second of fall, the object falls 16 feet; during the second second, it falls 48 feet; during the third second, it falls 80 feet; during the fourth second, it falls 112 feet. Assuming this pattern continues, how many feet does the object fall in the first 7 seconds after it is dropped?arrow_forward
- Elements Of Modern AlgebraAlgebraISBN:9781285463230Author:Gilbert, Linda, JimmiePublisher:Cengage Learning,Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
- College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL