Quiz 5.docx - Quiz 5 Question 1 0.5 out of 0.5 points Young children have difficulty regulating sodium levels because their kidneys havent fully matured

Quiz 5.docx - Quiz 5 Question 1 0.5 out of 0.5 points Young...

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Quiz 5 Question 1 0.5 out of 0.5 points Young children have difficulty regulating sodium levels, because their kidneys haven’t fully matured. A pediatrician wanted to know if there was a difference in sodium levels in young children, ages 1 – 6, diagnosed with gastroenteritis when different IV solutions were used to treat electrolyte imbalances. The pediatrician enrolled 100 children in the study. Children were randomly assigned to receive either normal saline or ½ normal saline for dehydration due to nausea, vomiting, and diarrhea. Sodium levels were drawn after 24 hours of IV fluids had been administered. The pediatrician had no idea whether either saline solution would work. Write an alternative hypothesis. Selected Answer: There will be a difference in levels between patients receiving normal saline and patients receiving 1/2 normal salne. Response Feedback: [None Given] Question 2 0.5 out of 0.5 points A one-tailed test would be used with a directional research hypothesis. Selected Answer: Tru e Question 3 0.5 out of 0.5 points Young children have difficulty regulating sodium levels, because their kidneys haven’t fully matured. A pediatrician wanted to know if there was a difference in sodium levels in young children, ages 1 – 6, diagnosed with gastroenteritis when different IV solutions were used to treat electrolyte imbalances. The pediatrician enrolled 100 children in the study. Children were randomly assigned to receive either normal saline or ½ normal saline for dehydration due to nausea, vomiting, and diarrhea. Sodium levels were drawn after 24 hours of IV fluids had been administered. The study found that there was a significant difference in sodium levels between the 2 solutions. What statitical error is possible and what are the possible consequences? Selected Answer: Type I error - there was a significant difference in sodium levels beyond what could occur by chance, but there may not be a difference in the population Question 4 0.5 out of 0.5 points A researcher wanted to know if a new brand of nutritional supplement would maintain body weight in dementia patients. It was formulated to have a better taste, as well as higher calorie and protein levels. The researcher had seen studies done by the manufacturer that indicated the product was far superior to current nutritional product. Thus, the scientist expected to see weight stay the same or increase in the study participants. In the experiment, 20 patients were given the current nutritional supplement for 4 weeks and then switched to the new supplement for 4 weeks. Weights were measured at the beginning of the experiment, at week 4, and at week 8. The change in weight between weeks 0 and 4 and 4 and 8 were compared to determine differences in body weight maintenance for both supplements.
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What is the independent variable for this study?
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