A manufacturer produces a commodity where the length of the commodity has approximately normal distribution with a mean of 19.7 inches and standard deviation of 5.2 inches. If a sample of 46 items are chosen at random, what is the probability the sample's mean length is greater than 17.9 inches? Round answer to four decimal places. Hint: Be sure to use the standard error. Enter an integer or decimal number [more..] Question Help: Video