Upper and lower bounds on average life expectancy

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Q1) Average life of Canadian women is 73.75 years and standard deviation of women's life expectancy in Canada is 6.5 years. Determine minimum percentage of women in Canada whose life expectancy is between 64 and 83.5 years. Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.

Q2) Average lateness for Airline A is 10 minutes. Variance of lateness measure is computed as 9. One of its airplanes arrived 8.5 minutes after stated arrival time. Average lateness for Airline B is 13 minutes with standard deviation of 4 minutes. One of its airplanes arrived 7 minutes late. Which airplane carried out better with respect to lateness?

Reference no: EM1312389

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