The history of scientific and technological advances that led to the Wright brothers' success began with

What event or events served as early evidence that the Communists and the Fascists could not and would not cooperate for long in a meaningful way?

a. the Soviet invasion of Germany b. the Spanish Civil War and World War I c. the German invasion of the Soviet Union and the Italian Civil War d. the Spanish Civil War and the German invasion of the Soviet Union e. the Spanish Civil War and the Soviet invasion of Germany

A researcher used a measure of self-esteem that has a mean of 50 and a standard deviation of 10 . If 1000 respondents completed the scale, how many would she expect to score between 40 and 60

a. 250 b. 340 c. 500 d. 680 e. 950