. Han writes a different computer program to simulate redistributing the data into different groups 500 times and examines the list of the difference of means for each simulation. He finds that the mean of the differences found from the simulation is 0.006 grams and the standard deviation is 0.182 grams. Han then models the simulation differences with a normal distribution and finds that the area under the normal curve greater than 0.19 grams is 0.156 and the area less than -0.19 grams under the normal curve is 0.156. Based on this analysis, Han concludes that there is enough evidence to conclude that the difference in means is due to the batteries having lost charge