An investor will randomly select 6 stocks from 20 for an investment. How many total combinations are possible? If the order in which stocks are selected is important, how many permutations will there be?
Answer to relevant QuestionsA company employs a total of 16 workers. The management has asked these employees to select 2 workers who will negotiate a new contract with management. The employees have decided to select the 2 workers randomly. How many ...A random sample of 250 adults was taken, and they were asked whether they prefer watching sports or opera on television. The following table gives the two-way classification of these adults. a. If one adult is selected at ...Refer to Exercise 4.135. Two students are selected at random from this class of 35 students. Find the probability that the first student selected is a junior and the second is a sophomore. A box contains 10 red marbles and 10 green marbles. a. Sampling at random from this box five times with replacement, you have drawn a red marble all five times. What is the probability of drawing a red marble the sixth ...Briefly describe an impossible event and a sure event. What is the probability of the occurrence of each of these two events?
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