17. Burger King's Drive-Through: Suppose that cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 PM. A random sample of 40 one-hour time periods between 12:00 noon and 1:00 P.M. is selected and has 22.1 as the mean number of cars arriving.

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To find the mean number of cars arriving at Burger King's drive-through, we can use the sample mean from the random sample given.

Step 1: Sum up the number of cars arriving in all 40 one-hour time periods
To do this, multiply the sample mean by the number of time periods:
Sum = Sample mean * Number of time periods = 22.1 * 40 = 884

Step 2: Find the average number of cars arriving per hour
Since the sample was taken over a 1-hour time period, we can divide the sum by the number of time periods:
Mean = Sum / Number of time periods = 884 / 40 = 22

Therefore, the mean number of cars arriving at Burger King's drive-through is 22 cars per hour. If you would like to find additional statistics or analyze the data further, please let me know.