Great Granola makes a trail mix consisting of peanuts, cashews, raisins, and dried cranberries. The trail mix sells for $3.50, and the most expensive ingredient is the cashew. The production manager takes a random sample of 15 bags of trail mix from two factories to determine the amount of cashews in each bag.

What statistical information could be useful to the production manager? Check all that apply.
the average amount of cashews per bag to determine average cost
the time of day each bag of trail mix leaves the factory
the amount of variation in ounces of cashews in the bags of trail mix
which factory produces the most consistent ounces of cashews in each bags of trail mix
the name of the general manager from each factory

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average