Q3. (15 pts) A new and cheap sensor based method for determining bisphenolA (BPA) in water was developed and compared with the recommended but more expensive liquid chromatographic method. For samples from a bottled water the following results were obtained by the two methods: BPA found (nM) Replicate # New method Recommended method 1 22.2 25.0 2 19.2 19.5 3 15.7 16.6 4 20.4 21.3 5 19.6 20.7 6 15.8 16.8 a) Apply the Q test to the data in each method and show whether there is any outlier in each data set at 95% confidence level. If there is an outlier in any of the data set reject it, if there is no outlier do not reject any result and then do the calculations in part b. b) Do these two methods give results having means which differ significantly at 95% confidence level and is there a good reason to replace the recommended method with the new method? Explain your findings using the following graph. . . 0