14. If you think the drive-through service at fast-food restaurants is slow, you are not alone. A...
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14. If you think the drive-through service at fast-food restaurants is slow, you are not alone. A market research firm studied and reported fast-food drive-through time. Here is a sample of 55 randomly selected customers and their drive-through time as shown in Table 3.11. What are the measures of variability for these drive-through times?
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