CHAPTER 5 valme u+ 20. Use the given values of n and p to find the minimum usual value u - 20 and the maximum usual 16) n=2720, p = 0.595 A) Minimum: 1274 641; maximum: 1367.159 B) Minimum: 1297.771; maximum: 1344.029 C) Minimum: 1357.159; maximum: 1274 641 D) Minimum: 1283.19, maximum: 1353.61 Solve the problem. 17) The probability is 0.4 that a person shopping at a certain store will spend less than $20. For groups of size 18, find the mean number who spend less than $20. 18) According to a college survey, 22% of all students work full time. Find the standard deviation for the number of students who work full time in samples of size 16. Determine if the ovicome is unusual Consider as unusual amy result that differs from the mean by more than 2 standard deviations. That is, unusual values are either less than u - 20 or greater than H + 20. 19) A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. A survey of 800 randomly selected consumers is to be conducted. For such groups of 800, would it be unusual get 554 consumers who recognize the Dull Computer Company name? Use the Poisson Distribution to find the indicated probability. 20) For a certain type of fabric, the average number of defects in each square foot of fabric is 0.4 Find the probability that a randomly selected square foot of the fabric will contain more than one defect