A scientific study showed that the lengths of housefly wings are normally distributed with a mean and standard deviation of 4.55 mm and 0.39 mm respectively. (7 m If a housefly wing is selected at random from those in the study, determine the probability that (i) the wing is longer than 5 mm. P ( 275) = the wing length is within 0.3 mm of the mean. 7% of the wing lengths were between 4.55-L mm and 4.55+L mm, determine the value