In a normal population, the theoretical mean is 100 and the theoretical standard deviation is 12.a) what is the chance that a sample of 36 items has a mean less than 102? B) what are the 2 points such that the chance of a mean of 36 items lying between the two points is 0.957? c) what are the two points such that the chance of a mean of 36 items lying between the two points is 0.99?