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ciston IC terval to widen? liuence level Assume the wei ght of koala newborns (ioeys) is normally distributed with an average of 500 mg and a standard eviation of 40 mg. By the way they are not bears and its incorrect to call them koala bears (see below). 31. If 1 joey is chosen at random, whats the probability that it weighs between 450 and 470 mg? 32. If 1 joey is chosen at random, whats the probability that it weighs exactly 500 mg? a) 0 33. If 10 joeys are chosen at random, how likely is it that they average between 450 and 470 mg? a)1%

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Given a :/4So -50o 4o - O 22GG O.lo 5G o.0089 0.89.

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