QMB3200_Chapter 6 – Flashcards
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The area under the curve of the normal probability distribution is always equal to 1.0.
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True
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A normal probability distribution's standard deviation (sigma)
completely describes its shape.
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False
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The z-score in a normal probability distribution determines the number of standard deviations that a particular value, x, is from the mean.
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True
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The _______ probability distribution is bell-shaped and symmetrical.
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Normal
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A smaller standard deviation for the normal probability distribution results in _______.
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a skinnier curve that is tighter and taller around the mean
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The shape of the exponential distribution is completely described by only one parameter, mu.
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True
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The shape of the exponential distribution is ________.
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right-skewed
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With the continuous uniform probability distribution, the probability of any interval in the distribution is equal to any other interval with the same width.
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True
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The time that customers wait to be served at the delicatessen for a grocery store follows the uniform distribution between 0 and 7 minutes. What is the mean of this distribution?
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3.5
