1. [2 marks) The diagram below illustrates episodes of tuberculosis in a population of 10. Tuberculosis (commonly known as TB] is a common, and in many cases lethal, infectious disease caused by various strains of mycobacteria. TB typically attacks the lungs but can also affect other parts of the body. It is spread through the air when people who have an active TB infection cough, sneeze, or othenlvise transmit their saliva through the air. A chart indicating the pattern of infection is detailed below: . HNWh-UQHOQDO NOV 2011 JAN 2012 JUL2012 DEC2012 ii] Compute the incidence rate of tuberculosis for 2012. Explain your answer. (0.5 marks] iii] Determine the period prevalence for 2012. Explain your answer. {0.5 marks} {iii] Participant 2 decided not to participate in the study after January 2012. Determine the effects of this decision in relation to incidence rate and prevalence for 2012. Clearly explain your answer. [1 mark] 215.5 marks] A pharmacist weighed pills and found that their weights varied slightly from the standard. The weights for 20 pills {in milligrams} were as follows: 145, 150, 151, 160, 152, 139, 147, 149, 155, 156, 151, 149, 161, 148, 149, 151, 146, 140, 135 and 136. Show all your workings and round your answer to two decimal places {if it is needed]. {i} Calculate the mean, 01, median, and C13. [1 mark] {ii} Construct and label a box plot for this data set. [1.5 marks] {iii] Construct and label a steam and leaf plot. [1 mark] {iv] what can be said about the shape of the distribution of the data? Clearly explain your answer. {1 mark] {v} Which measures of central tendency and dispersion are more appropriate to summarise this data set? Clearly Aurel-uh. \"n...- nn-llln- f-I nan-LI