A manufacturer of chocolate chips would like to know whether it’s bag filling machine works correctly at the 436 gram setting. It is believed that the machine is underfilling the bags. A 28 bag sample had a mean of 433 grams with a standard deviation of 23. A level of significance of 0.05 will be used. Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the bags are under filled?
There is not sufficient evidence to support the claim that the bags are under filled.
Or
There is sufficient evidence to support the claim that the bags are under filled.