either use a table, a statistical calculator, or here:http://davidmlane.com/hyperstat/z_table.html
27 percent?
the daily milk production for a certain type of dairy cow has a mean of 43 pounds per day with a standard diviation of 5 pounds per day. Suppose this daily mild production has a normal distribution. Calculate the probability that a randomly selected cow of this type has a daily mild production that is greater than 45 pounds.
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