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Question 9 (5 points) At a Psychology final exam, the scores are normally distributed with a mean of 70 points and a standard deviation of 10 points. a) Find the probability that a student selected at random will get a score less than 81. Question 9 options: Approx. 0.8643 Approx. 0.6787 C Approx. 0.8413 C Approx. 0.934 Question 10 (2 points) At a Psychology final exam, the scores are normally distributed with a mean 70 points and a standard deviation of 10 points. b) Find the probability that a student selected at random will get a score greater than 81. Question 10 options: Approx. 0.3403 C Approx. 0.2342 Approx. 0.1357 Approx. 0.1587 Question 11 (5 points) At a Psychology final exam, the scores are normally distributed with a mean 70 points and a standard deviation of 10 points. c) Find the probability that a student selected at random will get a score less than 60. Question 11 options: 0.4533 C 0.5341 C 0.1587 0.2303