A loaf of bread is normally distributed with a mean of 22 ounces and a standard deviation of (1)/(2) ounce.
TB 06-123 (i) The probability that a loaf of bread is ...
(i) The probability that a loaf of bread is < 20 ounces is 0.0.
(ii) The probability that a loaf of bread is > 21 ounces is 0.9772.
(iii) The probability that a loaf of bread is < 24 ounces is 1.0.