Question 923875

Using TI or similarly Your Casio fx-115 ES 
 A. P(z < -2 or x > 2) = 1- normalcdf(-2,2) = 1 - .9545 = .0455
P(z < -3 or x >3) = 1- normalcdf(-3,3) = 1 - .9973= .0027
........
B. P( -1 < z < 1) = normalcdf(-1,1) = .6827
P( -2 < z <2) = normalcdf(-2,2) = .9545