Question: The time taken by a randomly selected applicant for a mortgage to fill out a certain form has a normal distribution with mean value 10

The time taken by a randomly selected applicant for a mortgage to fill out a certain form has a normal with mean value 10 min and standard deviation 2 min. If five individuals fill out a form on one day and six on another, what is the probability that the sample average amount of time taken on each day is at most 11 min?

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