For a population with µ = 70 and ? = 8, what is the z-score corresponding to X = 82?

Findings show that selective attention improves sharply between ages __________, with gains continuing into adulthood

A) 2 and 4 B) 5 and 7 C) 6 and 10 D) 11 and 15

Which of the following statements about HIV-infected expectant mothers is true?

A) In South Africa, nearly 75 percent of all pregnant women are HIV-positive. B) Untreated HIV-infected expectant mothers pass the deadly virus to the developing organism 70 to 80 percent of the time. C) Antiretroviral drug therapy reduces prenatal AIDS transmission by as much as 95 percent. D) Antiretroviral drugs are now widely available in impoverished regions of the world.