A statistical analysis is internally valid if
A) its inferences and conclusions can be generalized from the population and setting studied to other populations and settings.
B) statistical inference is conducted inside the sample period.
C) the hypothesized parameter value is inside the confidence interval.
D) the statistical inferences about causal effects are valid for the population being studied.
Answer: D
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China's strategy of breaking the vicious circle of poverty focused on
a. transforming itself into a market-based economy b. reducing the resources devoted to infrastructure development c. refusing to trade with foreign countries d. reducing population growth by stringent restrictions on family size e. developing more traditional and labor-using production techniques
The social insurance provided by the government is insurance against
a. floods, hurricanes, and other natural disasters b. loss of funds in private pension programs c. sizable income losses when people retire or when they become disabled or unemployed d. loss of value of stocks and bonds when corporations go bankrupt e. loss of funds in private pension plans, retirement annuities, and unemployment
"The problem with socialism is that you eventually run out of other peopleÕs money.". This statement is by
a. Obama b. Margaret Thatcher c. George Bush d. Mao e. Deng
An external cost on supply can be measured graphically as the
A. Vertical distance between the market demand curve and the social demand curve. B. Vertical distance between the market supply curve and the social supply curve. C. Horizontal distance between the market supply curve and the social supply curve. D. Horizontal distance between the market demand curve and the social demand curve.