Find the area under the standard normal curve between z 281

Find the area under the standard normal curve between z = -2.81 and Z = -1.39, P(-2.81

Solution

We will use the standard normal distribution table to solve this problem.

5.

P(-2.81 < z< -1.39) = P(z<-1.39) - P(z<-2.81) = 0.0823 - 0.0025 = 0.0798

6.

P(0.78 < z < 2.17) = P(z< 2.17) - P(z<0.78) = 0.9850 - 0.7823 = 0.2027