Variation in Peanut M&Ms Use a 0.01 significance level to test the claim that peanut M&M candies have weights that vary more than the weights of plain M&M candies.

The standard deviation for the weights of plain M&M candies is 0.04 g. A sample of 40 peanut M&Ms has weights with a standard deviation of 0.31 g. Why should peanut M&M candies have weights that vary more than the weights of plain M&M candies?