Below are the research questions of four students and the statistical tests they used in orderto answer the said questions. Who among them useda statistical toolthat is NOT appropriate with the...

Extracted text: Below are the research questions of four students and the statistical tests they used in orderto answer the said questions. Who among them useda statistical toolthat is NOT appropriate with the objective(s) of his her study? A Eizabeth conducted a study to investigate the antimicrobial potentials of a plart's leaf ethanolic extractagainst two multiple antibiotic resistart bactenia; namdy Staphylococcus aureus and Escherichiacoliusing standard microbiologcaltechniques The extracts were testedusing agar diffusion method and the antimicrobial potency ofthe extracts were evaluatedby the deteminationofthe zone of inhibitions Elizabethused Marm-Whitney U Test to answer the question, "is there a significant diffßerence on the cone of inhibitions ofS aureus and E coli when treatedwith the plant's leafethanolic extract?" B. Elijah conducted a research to detamine the existence of a relationship between the plasma ascorbic acidlevels and stress levels of pregnant women Twenty (20) women in the last three months ofpregnancy, free ofmajor health disordas, andranging in age from 15 to 32 years, were selected for the study. The plasma Ascorbic acid values were detemined in milligrams per milliliters through a 20 mL bloodsample while the stress level scores were measuredusing the PSS or perceived stress scale. Elijahused Pearson's rto answer the question, "is there sufficientevidenceto conchude thatthere is a significant relationship between pregnant women's stress levelscores and plasma ascorbic acidvalues" C. Bethanelis trying to decide whether the use ofradialtires insteadofregular belted tires will improve the fuel economy ofthe models in their company. At 0.50 power and0.80 expectedeffect size, thirteen (13)cars were equipped with ra dial tires and drivenover a prescribed test course Without changing drivers, the same cars were then equipped with regular belted tires and driven once again ova the test course. The gasoline consumption in kilometers per liter, was recorded Bethariel usedt-test for independert samples to answer the question, "do cars equipped withradial tires ghe better fuel economy than those equipped with belted tires?" D. Elgardis trying to detemine whether the type ofleadership of a person is associated with his educational background(programgraduated). In this study, a sample of 384 managemert lea ders were selected Elgard used Chi-square test to answer the question, "is there a significant association between a person's type ofleadership and program graduated from?"