a) Banting is believed to reduce weight when done for a minimum of 10 days. A random sample of 5 ladies were weighed before and after Banting. The data is displayed on a table below. Person Weight before Weight After 85 96 105 78 90 120 Construct a 95% for the difference in mean weight. [8 Marks] b) Suppose you want to know the internet speed of two different mobile networks. Network X Network Y Sample size Sample Mean Sample std dev 60 50 Assuming that the population is normally distributed with equal variances Construct a 95% for the difference in mean internet