Which of the following is not a characteristic of the normal probability distribution? a. The graph of the curve is the shape of a rectangle b. The total area under the curve is always equal to 100%. c. 99.72% of the time the random variable assumes a value within plus or minus three standard deviations of its mean d. The mean is equal to the median, which is also equal to the mode.
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The normal distribution curve is bell-shaped, not rectangular. Show more…
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