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Question: 8 which of the following is not a characteristic of...

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8. Which of the following is not a characteristic of the normal probability distribution? Select one: a. Symmetry b. The total area under the curve is always equal to 1. c. 99.72% of the time the random variable assumes a value within plus or minus 1 standard deviation of its mean d. The mean is equal to the median, which is also equal to the mode. 10. Given that z is a standard normal random variable, what is the probability that -2.51 ≤ z ≤ -1.53? Select one: a. 0.4950 b. 0.4370 c. 0.0570 d. 0.9310 11. For a standard normal distribution, the probability of z ≥ 0 is Select one: a. 0. b. -0.5. c. 0.5. d. 1. 17.For a standard normal distribution, the probability of obtaining a z value between -2.4 to -2.0 is Select one: a. 0.4000 b. 0.0146 c. 0.0400 d. 0.5000

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