Solve the below problem:
Q: A manufacturer of chocolates claims that the mean weight of a certain box of chocolates is 368 grams. The standard deviation of the box's weight is known to be s = 10 grams. If a sample of 49 boxes has sample mean x = 364 grams, test the hypothesis that the mean weight of the boxes is less than 368 grams. Use a = 0.05 level of significance.