STAT 337 ASSIGNMENT 4 Due: 11:59pm EDT Friday, July 3, 2020 Notes for Submission: Upload your assignment directly to Crowdruark via the link you received by email. It is your responsibility to make sure your solution to each question is submitted in the correct section, that the pages are rotated correctly, and that everything is legible. Typed solutions are preferred. 1. [14 marks] This question is based on the following paper: Beltran-Corbellini, 251., Chico-Garcia, J. L., Martinez-Poles, .l.., 8: Galan, J. C. (2020). Acute-onset smell and taste disorders in the context of COVlD-IQ: a pilot multicentre polymerase chain reaction based case-control study. European journal of neurology. You can download the paper from https://doi.org/10.1111/ene.14273. The following questions will lead you through a discussion of the design and a simple unadjusted analysis of some of the data from this study. (a) [1 marks] In your own words state the goalf purpose of this case-control study. (b) [2 marks] Who are the cases in this study and how were they identied? (c) [2 marks] Who are the controls and how were they identied? (d) [2 marks] What is the exposure of interest and how was it assessed? (e) [3 marks] Using the data given in the rst line of Table I calculate and interpret the Odds Ratio for the primary association of interest in this study. (f) [2 marks] Find a 95% condence interval for the Odds Ratio from part (e) (g) [2 marks] Describe at least two potential limitations of this study andf' or sources of bias or error