The Mean Price of a Pound of Ground Beef in 75

question 30

Multiple Choice

The mean price of a pound of ground beef in 75 cities in the Midwest is $2.11 and the standard deviation is $0.56. A histogram of the data shows that the distribution is symmetrical. A local Midwest grocer is selling a pound of ground beef for $3.25. What is this price in standard units? Assuming the Empirical Rule applies, would this price be unusual or not? Round to the nearest hundredth.

• A)z = 2.04; This price would not be unusual.
• B)z = - 2.04; This is unusually inexpensive ground beef.
• C)z = 2.04; This is unusually expensive ground beef.
• D)z = - 2.04; This price would not be unusual.

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