5. Which of the following is true regarding the normal distribution? A. The mean, median, and mode are all equal B. It has two modes C. It is asymmetrical. D. The points of the curve meet the x-axis at z =-3 and z 3. 6. In an illustration of a normal probability distribution, a shaded area represents . A. A permutation B. A combination C. A probability D. A standard deviation 7. The standard normal probability distribution is unique because it has A. A mean of 1 and any standard deviation B. Any mean and a standard deviation of 1 C. A mean of 0 and any standard deviation D. A mean of 0 and a standard deviation of 1 8. The seasonal output of a new experimental strain of pepper plants was carefully weighed. The mean weight per plant is 15.0 pounds, and the standard deviation of the normally distributed weights is 1.75 pounds. Of the 200 plants in the experiment, how many produced peppers weighing between 13 and 16 pounds?
Answer
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