Question: Assuming an average life expectancy has Normal Distribution with a mean = 75 and the standard deviation = 10, find the probability that a person

Assuming an average life expectancy has Normal Distribution with a mean = 75

and the standard deviation = 10, find the probability that a person life expectancy

will be between 70 and 75?

(Tip: convert 70 and 75 to z1, z2 and use Appendix Table for Normal Distribution

to find probability that z will be between z1 and z2).

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