Mycobacterium tuberculosis or TB is a pathogenic bacteria th…

Mycobacterium tuberculosis or TB is a pathogenic bacteria that has been infecting humans across the globe for most of our evolutionary history, and is the second most deadly infectious disease world-wide. Which of the following is not a contributing factor to it’s prevalence?  

A researcher conducts two separate experiments to test how n…

A researcher conducts two separate experiments to test how nitrogen and phosphorus affect the growth of an aquatic plant species. In each experiment, only one nutrient is varied while all other conditions are kept constant. Simple linear regressions were performed for each nutrient. Experiment 1: Nitrogen Predictor Estimate Std. Error t-value Pr(>|t|) (Intercept) 2.10 0.12 17.50

A new antibiotic has just been developed, and scientists wan…

A new antibiotic has just been developed, and scientists want to determine whether it is more effective than the current drug being used. They develop a study and divide 20 participants equally into Group A (the new antibiotic) and Group B (the current drug). They measure the average bacterial colony count (in thousands) after treatment with the different antibiotics. The average colony count for Group A is 5.4 thousand unit (standard deviation, s = 0.4) and the average colony count for Group B is 6.4 thousand unit (standard deviation, s = 0.5). Given the information provided, which statistical test would be used to analyze these data?