Part a)
P ( Z > 1.48 ) = 1 - P ( Z < 1.48 ) = 1 - 0.9306 =
0.0694
Part b)
P ( -0.44 < Z < 2.68 ) = P ( Z < 2.68 ) - P ( Z <
-0.44 ) = 0.9963 - 0.33 = 0.6664
Part c)
P ( Z > ? ) = 0.7995
P ( Z > ? ) = 1 - P ( Z < ? ) = 1 - 0.7995 = 0.2005
Looking for probability 0.2005 in standard normal table to find the critical value
Z = - 0.84
P ( Z > -0.84 ) = 0.7995
Part d)
P( Z < –0.87 )
Z = -0.87 = P ( Z < -0.87 ) = 0.1922
Looking for critical value z = -0.87 in standard normal table to find the probability.
Get Answers For Free
Most questions answered within 1 hours.