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alf-sheet
brain teaser: jo buys stickers
for her and her 4 friends. she
divides the stickers into 5
groups but gives herself the
remainder of the stickers. if
her friends each got 22 and
she got 25, how many stickers
did she start with?

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.