Hypothesis Testing When Known 2 points 3. Thanksgiving is right around the corner! Scott Inc. is busy canning 100% pure pumpkin in 15 oz. cans to quickly get on shelves for all of those homemade pumpkin pies, cookies, and muffins (hello vitamin A). A random sample of 45 cans has a sample mean of 15.15 oz. with a sample standard deviation of 0.75 oz and a population standard deviation of 0.60 oz. Conduct all 6 steps of a hypothesis test to determine if the pumpkin can is less than 15 oz at a = 0.05 using the Critical Value approach only.