A supermarket is supplied by a consortium of milk producers. Recently, a quality assurance check suggests that the amount of milk supplied is significantly different from the quantity stated within...

A supermarket is supplied by a consortium of milk producers. Recently, a quality assurance check suggests that the amount of milk supplied is significantly different from the quantity stated within the contract: (i) define what we mean by significantly different; (ii) state the null and alternative hypothesis statements; and (iii) for the alternative hypothesis do we have a two tail, lower one tail, or upper one tail test?