Given
a) z = -0.84
b) z=-1.40 and z = 1.03
Find
a) Area under stanfard normal curve to the right of z = -0.84
b) Area under standard normal curve between z=-1.40 and z = 1.03
Explanation
a)
Right of z = -0.84
P(z > -0.84) = P(z < 0.84)
= 0.7995 (From normal table)
b)
P(-1.40 < z < 1.03) = P(z < 1.03) - P(z < -1.40)
= 0.8485 - (1 - 0.9192)
= 0.8485 - 0.0808
= 0.7677
Final Answer
a) 0.7995
b) 0.7677
