A sample of n = 10 scores has a mean of 50. A second sample has n = 5 scores and M = 60. If the two samples are combined, the sample mean for the combined sample will be greater than 55

David has been ill for some time. His weight is about 60% of the norm for his age. There has

been a widespread famine in his region, and his parents have a minimal amount of food for the family. The UN care workers are also fearful that David has suffered neurological damage from caloric deficiency. Which of the following diseases best characterizes David? a. Kwashiorkor b. Micronutrient malnutrition c. Marasmus d. Macronutrient malnutrition

Myelination of brain nerve axon membranes is accomplished by

a. oligodendrocytes. b. microglia. c. astrocytes. d. neurocytes. e. Schwann cells.