Riding the Bus is a drinking game. On the average, how long must a person wait? To combat these issues, there needs to be a way to encourage people to use public transportation, like the bus or commuter train. Find the mean, μ, and the standard deviation, σ. However, they may be asking for each category: Percentage of students who: Walk: 25% because it says so in the question. It can cause traffic congestion, increase the probability of vehicular accidents, and cause many people to stress out, leading to everything from health issues to road rage. Of the 30 people riding the bus to work today, 3 rode a bike to work yesterday, 7 drove a car to work yesterday, and the rest rode the bus to work yesterday. This example problem has been worked out for me, but I don't understand exactly where each of the numbers came from. The amount of time, in minutes, that a person must wait for a bus is uniformly distributed between zero and 15 minutes, inclusive. Of these, 10 men and 4 women drive to work and the rest ride the bus to work. E. Don't understand this question. Even with 10 people, you have a 1/5 chance of riding the bus. Cheryl surveyed 30 students who ride the bus to school, 8 who walk, 9 who ride bicycles, and 3 who ride in cars. Content Standard MAFS.6.SP Statistics and Probability ... ride the bus each week for 5 weeks. The below plot shows your probability of having to ride the bus based on how many players are in the game. 2nd guess: higher or lower than first card 3rd guess: inside, outside, or same as first two 4th guess: color 5th guess: higher or lower (than the 4th card) 6 guess: suit In Fig. Ride Bike: 12.5% ride bike as 3 is 12.5% of 24. Tips include not eating, drinking, or using your phone while taking public transit and using hand sanitizer after exiting a subway, train, or bus. )(.3^3)(.7^5)=.2542 Where exactly did each of these numbers come from? Thanks for helping me out. Yikes! Such a group ride is called the blocking ride. Week Number of people 1 16,325 2 18,140 3 17,362 4 16,697 5 16,786 How many more people need to ride the bus in week 6 to increase the mean number of riders per week by 10? 9. If 30% of commuters ride the bus, find the probability that, if 8 commuters were chosen at random, 3 will ride the bus. Estimate the probability that the next student Cheryl surveys will walk to school. 1st guess: color, red or black. What is the probability that a person waits fewer than 12.5 minutes? A bus-pooling plan is fair if there is no group ride in which all passengers could get more incentives than in the current bus-pooling plan. Obvious answer is 100% as they all (either) walk, ride bike, ride bus, or are driven. Every time you get on the bus, there is a 60% probability that you make it to profit target station. 2 4 5 or 16% It is played by guessing cards. (8!/3!(8-3)! Odds of "Riding the Bus" on the first try. 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