Question: Different cereals are randomly selected and the sugar content is obtained for each cereal, with results shown below. Use a 0.05 significance level to test the claim of a cereal lobbyist that the mean for all cereals is less than 0.3 grams.

0.03 0.24 0.30 0.47 0.43 0.07 0.47 0.13

0.44 0.39 0.48 0.17 0.13 0.09 0.45 0.43