Are low-fat diets or low-carb diets more effective for weight loss? This question was addressed in the article "Comparison of the Atkins, Zone, Ornish, and LEARN Diets for Change in Weight and Related Risk Factors Among Overweight Premenopausal Women: The A TO Z Weight Loss Study: A Randomized Trial" (C. Gardner, A. Kiazand, et al., Journal of the American Medical Association 2007:969-977). A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time the sample mean weight loss was 4.7 kg with a sample standard deviation of 7.2 kg. A second sample of 79 subjects went on a low-fat diet. Their sample mean weight loss was 2.6 kg with a standard deviation of 5.9 kg.
a. Can you conclude that the mean weight loss is greater for those on the low-carbohydrate diet?
b. Can you conclude that the mean weight loss on the low-carbohydrate diet is more than 1 kg greater than that of the low-fat diet?
Chapter 2: The Human Ear and Simple Tests of Hearing Hearing Mechanism Conductive mechanism o the outer and middle ears Sensory/neural mechanism o the inner ear and the auditory nerve Pathways of Sound Sound can be heard by two ways Air Conduction(AC) Pathway Outer – Middle – Inner – auditory nerve Hearing by AC depends on the functioning of the outer, middle, inner ear & of the nerve pathways Bone Conduction(BC) Pathway Possible to bypass the conductive mechanism (outer ear & middle ear) by vibrating the skull & directly stimulating the inner Inner ear - nerve Hearing by BC depends on the functionin