") (4 pus. ] A consumer group suspects that a large food chain makes extra money by supplying less than the specified weight of 16 oz in its standard "one pound" packages of ground beef. A random sample of 10 packages yields a mean weight of 14.7 oz, with a calculated standard error of the mean of 0.26 oz. Using this information, do both of the following: a) Construct a 95% confidence interval. b) Interpret your results in the context of the group's suspicions