A normal population has mean  μ  =  34  and standard deviation  σ  =  10 . (a) What proportion of the population is between  10  and  20 ? (b) What is the probability that a randomly chosen value will be between  28  and  38 ? Round the answers to at least four decimal places. Part 1 of 2       The proportion of the population between  10  and  20  is    .         Part 2 of 2       The probability that a randomly chosen value will be between  28  and  38  is    .

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