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. During a certain week, the mean price of gasoline in California was $4.117 per gallon. A random sample of 38 gas stations is selected

. During a certain week, the mean price of gasoline in California was $4.117 per gallon. A random sample of 38 gas stations is selected from this population. What is the probability that the mean price for the sample was between $4.128 and $4.143 that week? Assume = $0.049. (Adapted from U.S. Energy Information Administration)

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