3. In order to make sure our 7 month old was getting enough vitamin D, we were instructed to provide vitamin D drops. The bottle we purchased claimed to have 400 [U (international unit) of vitamin D per drop. We decided to test the product to see how much vitamin D was actually In each drop\". [9 Marks] a) At a 95% condence level, do my husband's results agree with the advertised amount of vitamin D? b) At a 95% confidence level, do our two experiments give values for the amount of vitamin D that are statistically different? c) Given the results for part a) and b), can you make any conclusions about my results relative to the advertised amount of vitamin D. Why or why not? (No calculations needed for part c)