The Chocolate Chip Cookies store claims that the average 1-ounce chocolate chip cookie contains less than 100 calories. A random sample of 16 different brands of 1-ounce chocolate chip cookies resulted in the following calorie amounts.
80 125 80 160 125 105 155 120 90 100 150 80 100 120 110 100
At the α = .05 level, is there sufficient evidence that the average calorie content is less than 100 calories?