Can someone please help me with these 3 questions for biostatistics

AaBbCcDdE AaBbCcDdE AaBbCcDC AaBbCcDdEE A Normal No Spacing Heading 1 Heading 2 and improvements, choose Check for Updates. 12 Part 3: Answer the following questions using the information in the table below, which is from a study of 40 patients that examined whether low cerebral blood flow (CBF) is associated with subsequent development of white matter hyperintensities (WMH). Table 1. Baseline characteristics in the study sample Age (mean + s.d.) 61+11 Female 30% Hypertension 52.50% NIHSS at baseline (median, IQR) 1 (1-3) Diabetic 12.50% WMH volume at baseline 9.21 + 11.87 ml WMH volume at follow-up (18 months) 11.96 + 13.16 ml Abbreviations: IQR, interquartile range; NIHSS, National Institute of Health Stroke Scale; ROI, region of interest; WMH, white matter hyperintensity. 12. Age is reported in terms of the mean and standard deviation, while stroke score (NIHSS) is reported in terms of the median and interquartile range. Why might the authors have chosen to report different statistics for these two continuous variables? [2 points] 13. This study was conducted in a sample of n 40 stroke patients recruited from the Foothills Medical Centre in Calgary, Alberta, Canada between May 2009 and September 2011. Based on the information in this table, approximately what percentage of stroke patients in the patient population from which this sample was drawn are under the age of 50? Explain how you arrived at your answer and show any equations and calculations you used. [4 points] 14. Based on the information in this table, is it plausible that 50% of stroke patients in the population that this sample came from are female? Explain how you arrived at your answer and show any equations and calculations you used. [4 points] Page 3 of 3 Focus