A life insurance company wants to update its actuarial tables.Assume that the pr

A life insurance company wants to update its actuarial tables.Assume that the probability distribution of the lifetimes of theparticipants is approximately a normal distribution with a mean of71 years and a standard deviation of 3.5 years. What proportion ofthe plan participants are expected to see their 75th birthday?Note: Write your answers with two places after the decimalrounding off as appropriate.