Question

3. Suppose there are 100 students in your accounting class, 10 of whom are left-handed. Two students are drawn at random. Draw the probability tree and insert the probability for each branch. a. What is the probability of the following events? b. Both are right-handed? c. Both are left-handed? d. One is right-handed and the other is left-handed? At least one is right-handed? oo b е. 4 Suppose you flip eight fair coins. What is the probability of flipping exactly eight heads? b. What is the probability of flipping at least four heads? What is the probability of flipping at most seven heads? d. What is the probability of flipping less than three heads? What is the probability of flipping more than one head? а. с. е.

Answer 1

ps? 1-100 left = 10 , 7 light = 90 = 90x89 100x199 Second studen - first students 90x10 Right ) second studentas 10699 a 100 X fint student secreto do colony = het nga Cleft) Second - 10+ studentos 100x99 os pctorty right) (Fox)/(pdx 90) 0.8091 ey pc tory.dot) = (1019)/C100497) 0.0091 pratleast off right) = 1-propont right = 1-0.0091 10.9909