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QUESTION
The number of beverage cans produced each hour from a vending machine is normally distributed with a standard deviation of 8.
The number of beverage cans produced each hour from a vending machine is normally distributed with a standard deviation of 8.6. For a random sample of 12 hours, the average number of beverage cans produced was 326.0.Find the lower confidence limitof the 99% confidence interval for the population mean number of beverage cans produced per hour.
And another one
