A spinner is divided into four equal sections: two are red, one is green, and one is blue. If you spin the spinner four times in a row and it lands on green each time, would you think that the spinner is broken?
A. Yes. The probability of four green spins is 0.0039, which is too small for the event to likely occur.
Exhibits
B. No. The probability of four green spins is 0.0039, which is small but not impossible.
c. Yes. Two of the four spins would have landed on red if the spinner was fair.
a
D. No. However, if the spinner lands on green a fifth time, then there is something wrong with the spinner.

Problems and applications q5 four roommates are planning to spend the weekend in their dorm room watching old movies, and they are debating how many to watch. here is their willingness to pay for each film: willingness to pay (dollars) shen antonio dmitri jake first film 10 9 8 3 second film 8 7 6 2 third film 6 5 4 1 fourth film 4 3 2 0 fifth film 2 1 0 0 within the dorm room, the showing of a movie a public good. if it costs $12 to rent a movie, the roommates should rent movies in order to maximize the total surplus. suppose the roommates choose to rent the optimal number of movies you just indicated and then split the cost of renting equally. this means that each roommate will pay $ .