The time it takes for a cheese-and-ham sandwich to be toasted in the Cass ground floor cafeteria appears to be normally distributed. A random sample of the times for toasting 20 such sandwiches had a sample mean of 164 seconds and a sample standard deviation of 20.7 seconds. What is the value of the upper end-point of the 99% confidence interval for the mean time to toast a cheese-and-ham sandwich? Give your solution accurate to 4 decimal places.

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.