31. You Explain It! Cell Phone Rates Monthly charges for cell phone plans in the United States are normally distributed with mean u $62 and standard deviation o = $18. 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 plans that charge less than $44. (c) Suppose the area under the normal curve to the left of x $44 is 0.1587. Provide two interpretations of this result

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