A sample of100 movie theaters showed that the mean three-day weekend gross was $25,746 per theater with a standard deviation was $4980. What is the 95 percent confidence interval estimate for the population mean weekend gross per theater? The Lost World took in $72.1 million in its first three-day weekend. If Harry Potter was shown in 3678 theaters, give an interval estimate of its first three-day weekend. Did Harry Potter really beat the Lost World?
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