A future colleague remarks that 95% of the co-op interviews they were involved in have lasted between 15and 35minutes. Hint: Use the empirical rule.

a) Assuming that the time required for a co-op interview is normally distributed, what is the mean and standard deviation? Round to the nearest minute.

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b) If you have 3hours to complete 7 interviews, what is the probability that you will finish in time?

P=P= Round to at least4 decimal places.