The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) . The brand advertises that the mean nicotine content of their cigarettes is 1.5, but measurements on a random sample of 100 cigarettes of this brand gave a mean of x = 1.53 and standard deviation s = 0.1. Is there sufficient evidence in the sample to suggest that the mean nicotine content is actually higher than advertised? Use = 0.01.