There is some variability in the amount of phenobarbital in each capsule sold by a manufacturer. However, the manufacturer claims that the mean value is 20.0 mg. To test this, a sample of 25 pills yielded a sample mean of 19.7 with a sample standard deviation of 1.3. What inference would you draw from these data? In particular, are the data strong enough evidence to discredit the claim of the manufacturer? Use the 5 percent level of significance.
Alpha Gamma Delta Purpose To gain understanding that wisdom may be vouchsafed to me To develop and prize health and vigor of body To cultivate acquaintance with many whom I meet To cherish friendships with but a chosen few and to study the perfecting of those friendships To welcome the opportunity of contributing to the worlds work in the community where I am placed because of the joy of service thereby bestowed and the talent of leadership multiplied To honor my home, my country, my religious faith To hold truth inviolable, sincerity essential, kindness invaluable To covet beauty in the environment, manner, word and thought To possess high ideals and to attain somewhat unto them This shall be my purpose t