QUESTION 1. For each of the following variables, identify whether it is a qualitative, quantitative discrete or quantitative continuous variable and state the scale of measurement. (a) The number of times per mont students went to library (b) The types of soap brand purchased by a group of mothers (c) IQ test score for psychometrics test (d) The weight of vegetables (e) The list of top 5 skilled workers in Company Suci (10 marks) 2. Fifty college students were randomly selected and their height were measured. The following information were obatined. Min=130 Max=193 Q1=150 Q3=170 Median=156 Draw a box and whisker plot. Determine the shape of distribution. (5 marks) 3. Suppose the following data are selected randomly from a population of normally distributed value. 40 44 43 48 51 57 58 42 50 47 (a) What is the point estimate of u (1 marks) (b) Construct a 95% confidence interval to estimate the population mean