1. In an introductory psychology class with n=50 students, there are 9 freshman males, 15 freshman females, 8 sophomore males, 12 sophomore females and 6 junior females. A random sample of n=2 students is selected from the class. If the first student in the sample is a male, what is the probability that the second student will also be a male? a. 8/14 b. 12/20 c. 20/44 d. 20/50 2. A vertical line is drawn through a normal distribution at z=0.50, and separates the distribution into two sections. What proportion of the distribution is in the larger section? a. 0.6915 b. 0.3085 c. 0.1915 d. 0.3830 3. A normal distribution has =80 and =10. What is the probability of randomly selecting a score greater than 75 from the distribution? a. p=0.50 b. p=0.25 c. p=0.3085 d. p=0.6915 4. A normal distribution has a mean of =70 with =12. If one score is randomly selected from this distribution, what is the probability that the score will be greater than x+79? a. 0.7734 b. 0.2266 c. 0.2734 d. 0.3085 5. A normal distribution had a mean of =70 with =12. If one score is randomly selected from this distribution, what is the probability that the score will be less than X=76? a. 0.1915 b. 0.3085 c. 0.6915 d. 0.3830 6. A normal distribution has a =100 with =20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X=80 and X=100? a. 0.8413 b. 0.1587 c. 0.3413 d. 0.6826 7. A normal distribution has a mean of =100 with =20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X=90 and X=120? a. 0.1498 b. 0.4672 c. 0.5328 d. 0.2996