Question 2 (a) On average, customers spent RM12.50 on a meal in a restaurant in Town A. Suppose that the amount spent on a restaurant meal is normally distributed and that the standard deviation is RM3.00. (i) What is the probability that a randomly selected customer spent between RM12.90 and RM14.00? (5 marks) (ii) Between what two values will the middle eighty percent of the amounts spend fall? (3 marks) (b) The fill amount of bottles of a drink is normally distributed, with a mean of 1.9 liter and a standard deviation of 0.06 liter. Suppose 30 bottles are selected as random sample. Then, 82% of the sample mean amount of the drink will be at least how much