Question

Find the P-value for Z > 1.25

&

Find the P-value for -1.24 < z < 2.20

Answer 1

SOLUTION:

From given data,

Find the P-value for Z > 1.25

P-value for Z > 1.25

P(Z > 1.25) = 1 - P(Z < 1.25)

= 1 - 0.8944

= 0.1056

P(Z > 1.25) = 0.1056

P-value for Z > 1.25 is 0.1056

Find the P-value for -1.24 < z < 2.20

P-value for -1.24 < z < 2.20

P (-1.24 < z < 2.20) = P(Z < 2.20) -  P(Z < -1.24)

= 0.9861 - 0.1075

= 0.8786

P (-1.24 < z < 2.20) = 0.8786

P-value for -1.24 < z < 2.20 is  0.8786