It is envisaged to produce in packages of 250 gr in a newly established factory. In order to control the weight of the packages, 100 packages were randomly selected and the average weight was...

It is envisaged to produce in packages of 250 gr in a newly established factory. In order to control the weight of the packages, 100 packages were randomly selected and the average weight was determined as 244 g and standard deviation 18 g for these selected packages. At the α = 0.05 significance level, can the weight of the packages be said to be as predicted? Decide in the hypothesis