18) Assume that a procedure yields a binomial distribution with a trial repeated n = 30 times. Use the 18) binomial probability formula to find the probability of x = 5 successes given the probability p = 1/5 of success on a single trial. Round to three decimal places. A) 0.421 B) 0.172 C) 0.198 D) 0.067 19) Use the given values of n = 2112, p =- - to find the minimum value that is not significantly low, u - 19) 20, and the maximum value that is not significantly high, u + 20. Round your answer to the nearest hundredth unless otherwise noted. A) Minimum: 1544.2; maximum: 1623.8 B) Minimum: 1478.7; maximum: 1689.3 C) Minimum: 1564.1; maximum: 1603.9 D) Minimum: 1623.8; maximum: 1544.2 20) The probability that a call received by a certain switchboard will be a wrong number is 0.02. Use 20) the Poisson distribution to approximate the probability that among 150 calls received by the switchboard, there are at least two wrong numbers. Round your answer to four decimal places. A) 0.8009 B) 0.1991 C) 0.2240 D) 0.5768 E) 0.7760 21) Find the standard deviation, o, for the binomial distribution which has n = 48 and p = 3/5. Round 21) your answer to the nearest hundredth. A) o = 0.98 B) o = 7.51 C) 6 = 3.39 D) G = 6.66 4