A sample of ten (10) packages was taken from the output of a packaging machine. Following are the masses of the packages, to the nearest gram. 44 g, 45, 44g, 48g, 43g, 47 9, 44 9, 45,9,469 , 46 g [You may use the following summaries: _ x=452 _ x2=20452] The random variable X follows a normal distribution given by X ~ N (200, 25). What is the z-value for X = 170 is given by: O a. 170-200 5 O b. 170-200 25 O c. 200-170 14. 14 O d. 200-170 25