Probability and Normal Distribution

7)Find each of the following probabilities for a normal distribution

1. P (z > 1.25) = ANSWER 0.1056
2. p (z > - 0.60) = ANSWER 0.7257
3. p (z
4. p (z

8) What proportion of a normal distribution is located between each of the following z-score boundaries?

a) z=-0.25 and z=+0.25

b) z=-0.67 and z= +0.67

c) z=-1.02 and +1.20

12) A normal distribution has a mean of ? = 70 and a standard deviation of

\f\fPlz 1.80 0359\f\f