BUSINESS STATISTICS AND PROBABILITY

tion 7 [Give your answers correct to 3 decimal places.] et ered Time left 2:41:07 ed out of Finis 1(a) For each of the following variables, identify whether the variable is qualitative or quantitative. If the variable is quantitative, identify whether the variable is discrete or continuous. (i) Different brands of COVID-19 self-test kits. (ii) COVID-19 vaccine volume per dose (in ml). [ 4 marks ] 1(b) The following data contains the average ticket prices (in USD $) for 21 Grand Prix races for the FIA Formula One World Championship. Illustrate the data with a percentage histogram. 311 261 160 323 361 850 295 412 421 412 348 261 521 361 501 241 414 560 619 489 632 [ 16 marks ] 1(c) The following boxplot for age of death is plotted from a set of data with 100 samples. It represents distribution of the age of deaths in most population in 2020. Most people live to be between 70 and 80 years old, with fewer and fewer living less than this age. Describe the distribution of the boxplot and report a reason for your answer. Distribution of Age of Death [ 5 marks ] 1(d) Let P(A) = 0.15, P(B) = 0.10, and P(AnB) = 0.05. Illustrate this situation in the form of a Venn diagram. Explain whether event A and event B are collectively exhaustive. [ 5 marks ]