Which of the following is true?
a. Ethanol from corn is efficient.
b. Biofuels help to hold down carbon dioxide emissions.
c. Power-generating by natural gas is costlier than coal in the United States.
d. Coal is the cheapest way to generate power in most parts of the world.
e. Oil sands in Canada and oil shale in the U.S. West are scarce.
D
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The expectation that citizens may not be discriminated against on account race, gender, or national background and should have an equal chance to succeed in life is called
A) ?equality of opportunity. B) ?equality of chance. C) ?equality of outcome. D) ?equality of circumstance. E) ?equality of government.
Answer the following statement(s) true (T) or false (F)
1. When using the ?2 test statistic, “expected” frequencies are those that researchers observe in the sample. 2. The ?2 test statistic is useful for determining the direction of relationships. 3. The concept of statistical significance relates to the matter of confidence. 4. The null hypothesis is stated in Greek letters because the null hypothesis refers to relations in the population. 5. The first step in hypothesis testing is stating the null hypothesis.