Please answer the 4 questions. Refer to the attached photo below.

QUESTION 9 - 2 pts A group of researchers wanted to determine if the mean HDL of male patients is less than female patients. HDL from one hundred patients were collected and results are as follows: Gender n Mean + SD Male 28 1.1318 + 0.16191 Female 72 1.2828 + 0.11039 Do these results show sufficient evidence that the mean HDL of male patients is less than female patients? Test at 5% level of significance. What is the correct test statistic to test the hypothesis? t = 6.161 t = 4.541 t = 3.731 QUESTION 10 - 2 pts In the study of Dejgaard et al. (2018), Genotype + LVH - (hypertrophic cardiomyopathy genotype positive, phenotype negative) and HCM LVH + ( phenotype positive hypertrophic cardiomyopathy) patients were compared. Screenshot of the table of results is shown below. Clinical and echocardiograph souped according to HCM phenotype Cenctype + LVH- [n = 66) HCM LVH + [n = 121) Ace. years 38 + 15 55 # 14 28 (42) Atrial fibrillation, n (#) 44 (367 Body mins index, kgm 240+41 nattily history of sudden cardiac death. = [X) 17 1747 3/45 implantable cardiac defibrillator at study start, n [2) 36 413) 13 (11) candary prevention. me vigorous earrent, h 1506 (0-10.384) 20302 (0-35,376) comere protein mutation, n (X) 66 (160) 61 (50%] plained syncope. () 2(3) 16 (13) tricular arrhythmias Cardiac arrest, " (X) complained ventricular tachycardia. n (2) 35 (59) prom exercise age 7-20 years, h 1356 (0-8752) 23 (0-16,067) porous exercise of inclusive, " (1) pettree athletes at inclusion, a [X]" 16 124 11 15) mapcardiography A ratio Ejection fraction. * 1.6 4 0. 13 4 0 Global longitudinal strain, -214 1: 22 85 # 16 16 1 35 Left atriven diameter, mrs 43+8 Left african are a index, cm'/m' 125 4 33 LY end-diastolic diameter index, major' 35 30 LY end-diastolic voleme index, cra/m LY end-systolic came 5 + 14 What statistical test was used to compare the echocardiography results of the Genotype + LVH - (hypertrophic cardiomyopathy genotype positive, phenotype negative) and HCM LVH + ( phenotype positive hypertrophic cardiomyopathy) patients? one-sample t-test one-sample z-test Independent samples t-test QUESTION 24 - 2 pts In a weight loss program, the weight of 15 participants were recorded and results are as follows: Mean + SD Baseline 201.0 + 5.0 After 150.0 # 10.0 Decrease 61.0 + 8.0 Do the data provide sufficient evidence that the weight loss program is effective in providing weight loss? Test at 5% level of significance. Compute for the test statistic t. Express your answer in three (3) decimals. (fill in the blanks) Note: Ans is not 26.88 QUESTION 27 - 2 pts A group of researchers wanted to determine if the mean HDL of male patients is less than female patients. HDL from one hundred patients were collected and results are as follows: Gender n Mean + SD Male 28 1.1318 + 0.16191 Female 72 1.2828 + 0.11039 Do these results show sufficient evidence that the mean HDL of male patients is less than female patients? Test at 5% level of significance. What is the correct test statistic to test the hypothesis? t = 5.351 t = 6.161 t = 4.541