Comparing one- and two-tailed tests (with a constant alpha level and sample size), the probability of rejection will be higher for
a. the two-tailed test
b. the one-tailed test, if you have correctly predicted the direction of the difference
c. neither, the probability of rejection does not change
d. the test with the most conservative test statistic
b
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Increasingly, U.S. cities and counties are hiring private companies to manage their water works
Indicate whether the statement is true or false
By 1900, the share of the U.S. labor force working on farms was equaled by the share working in
a. retail sales. b. service jobs. c. computer-based jobs. d. industrial jobs.
Which of the following statements is true of the gender pay gap?
A. The average woman must work almost nine extra weeks every year to make the same wages as a man. B. Women receive half the pay men receive for the same work. C. Beyond a certain designation, men and women receive equal pay for equal work. D. Women are paid less than men because they are generally less qualified than men in almost all fields. E. The gender pay gap continues to increase even as women on average work for more hours than men.
The standard error of the mean is the same thing as
a. the standard deviation of a sample b. the standard deviation of a population c. the standard deviation of a sampling distribution d. the variance of a sample