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Mathematics, 26.06.2021 20:20 pgld7555
The owners of Prim's Pizza are concerned that many of their customers are starting to purchase pizza from The Pizza Palace because of its new pizza, which has fewer calories than Prim's. A random sample of 100 medium pizzas from Prim's found a mean of 240 calories and a standard deviation of 8.6 calories. A random sample of 100 medium pizzas from The Pizza Palace found a mean of 210 calories and a standard deviation of 5.7 calories. Which of the following formulas gives a 95% confidence interval for the difference in mean calories between a Prim's Pizza medium pizza and a medium pizza from The Pizza Palace?
30 plus or minus 1.96 times square root of 8.6 over 100 plus 5.7 over 100
30 plus or minus 1.96 times square root of 8.6 squared over 100 plus 5.7 squared over 100
30 plus or minus 1.96 times square root of 8.6 squared over 99 plus 5.7 squared over 99
30 plus or minus 1.98 times square root of 8.6 over 100 plus 5.7 over 100
30 plus or minus 1.98 times square root of 8.6 squared over 100 plus 5.7 squared over 100
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The owners of Prim's Pizza are concerned that many of their customers are starting to purchase pizza...
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