1. [2] The customer care manager at a cell phone company keeps track of how long each help-line caller spends on hold before speaking to a customer service representative. He finds that the distribution of wait times for all callers has a mean of 12.8 minutes and a standard deviation of 7.2 minutes. The distribution is moderately skewed to the left. Suppose the manager takes a random sample of 25 callers and calculates thor mean wait time x. What is the shape of the sampling distribution? Justify your answer.

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