A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 416 gram setting. It is believed that the machine is underfilling or overfilling the bags. A...

A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 416 gram setting. It is believed that the machine is underfilling or overfilling the bags. A 21 bag sample had a mean of 407 grams with a variance of 900. Assume the population is normally distributed. A level of significance of 0.02 will be used. Specify the type of hypothesis test.