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For the past 30 years, the average satisfaction rating for a sushi restaurant has been 3.9 out of 5. If the rating for a sample of 256 people is 4.1 with a standard deviation of 0.5, the critical lower limit at 95% confidence, for the population mean is 4.16 O 3.96 4.04 O 3.84 For the past 30 years, the average satisfaction rating for a sushi restaurant has been 3.9 out of 5. If the rating for a sample of 256 people is 4.1 with a standard deviation of 0.5, the critical lower limit at 95% confidence, for the population mean is 4.16 O 3.96 4.04 O 3.84
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