A confectionary company claims that minimum weight of chocolates in each box is 350g. Quality control dept has determined that weights of chocs in each box are normally distributed with mean equal to specified weight and standard dev of 8g. 50 boxes selected at random and it is discovered that mean weight of chocs in these boxes is 348g.
Use Hypoth test to decide whether there is sufficient evidence to validate company's claim?
Is there more than one method?

Could use a chi square hypothesis test.

X^2 = sigma(total of) {observed frequency - expected frequency)^2/expected frequency]


Less that 5% and through out the hypothesis.