In a large city, the population proportion of residents favoring the construction of a toll way passing through the city is p=.55. A random sample of n= 121 residents is selected. Use pˆ to denote the sample proportion of residents favoring the construction of a toll way passing through the city. The mean (or expected value) of the sample proportion pˆ is (2) The standard deviation of the sample proportion pˆ is closest to (2) The probability that the sample proportion pˆ is less than 0.56 is closest to (3) The probability that the sample proportion pˆ is larger than 0.54 is closest to (3) The probability that the sample proportion pˆ is larger than 0.57 is closest to (3)