Historically, the mean height of the corn in a field has been 80 inches. This year, though, the corn seems shorter than usual. A sample of 22 stalks is taken and measured. The sample has a mean of 78.3 inches and a standard deviation of 3.6 inches. Test the claim that the mean height of the corn is now less than 80 inches. Use 0.05 as your significance level. You may assume the population is normally distributed. Be sure to report the p-value and write an interpretation in terms of the claim that we have been told to test.