You Explain It! Refrigerators The lives of refrigerators are normally distributed with

Chapter 7, Problem 32

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You Explain It! Refrigerators The lives of refrigerators are normally distributed with mean m = 14 years and standard deviation s = 2.5 years. Source: Based on information from Consumer Reports (a) Draw a normal curve with the parameters labeled. (b) Shade the region that represents the proportion of refrigerators that last for more than 17 years. (c) Suppose the area under the normal curve to the right of x = 17 is 0.1151. Provide two interpretations of this result.

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