The ages of all UofR students follows a normal distribution with µ = 26 years and standard deviation o = 3.4 years. a) Find the probability that a randomly chosen UofR student is younger than 20 years of age. b) Find the age, x, such that only 25% of the students are older than x. c) Find the probability that a randomly chosen sample of 36 UofR students has a mean age between 24 and 25.

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