The probability that an American CEO can transact business in a foreign language is .20. Ten American CEOs are chosen at random. (a) What is the probability that none can transact business in a foreign language? (Round your answer to 4 decimal places.) Probability (b) What is the probability that at least two can transact business in a foreign language? (Round your answer to 4 decimal places.) Probability (c) What is the probability that all 10 can transact business in a foreign language? (Round your answer to 5 decimal places.) Probability

(a) 0.1074

(b) 0.6342

(c) 1.024 x 10⁻⁷

Step-by-step explanation:

This problem can be modeled as a binomial probability with probability of success (transacting business in a foreign language) p =0.20, and n = 10 trials. The binomial probability model is:

(a) None can transact business in a foreign language, P(X=0)

(b) At least two can transact business in a foreign language

(c) All 10 can transact business in a foreign language

correct answers below:

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: