A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 417 gram setting. it is believed that the machine is underfilling the bags. a 23 bag sample had a mean of 416 grams with a variance of 225 . a level of significance of 0.01 will be used. assume the population distribution is approximately normal. state the null and alternative hypotheses.
H₀ ___ Ha: ___