A [Answer all Questions) 1. The following two grouped frequency distributions represent the times, over a one-week period, that patients had to wait before seeing a doctor in the Accident and Emergenc},F department of two hospitals. Hospital A waiting Times Frequencyr of Patients Hospital B waiting Times Frequencyr of Patients Minutes Minutes a) Determine the mean and standard deviation of waiting times for each hospital; h) Determine the coefcient of variation for each hospital's waiting times; c) Determine the coefcient of skewness for each hospital's waiting times; d} With reference to parts (a), {h} and {c} discuss the differences in waiting times between the two hospitals. 2. The table shows the body mass index {BMI} X. and the systolic blood pressure (SEP). Y in the mmttg, for each of a random sample of l ii men, aged between 35 years and 40 years, from a particular population. Inn-ME\" a} Calculate the coefcient of correlation of the distribution. Interpret your results. b) Compute the coefcient of determination and interpret your results. c) Find the Simple regression line of Y on K. d} Use your equation to estimate the SBP of a man from this population 1who is aged 33 years and who has a BMI of 30