Each of the following is part of conducting a t test for independent means, EXCEPT:
A) difference scores are found for each participant
B) the population variances are estimated
C) a comparison is made against a t distribution
D) the variance of the distribution of differences between means is figured
A
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Numeric variables are also called:
A) nominal variables B) categorical variables C) quantitative variables D) irrelevant variables
The fertility rates of women in the United States declined
a. steadily from 1800 through 2000. b. from 1800 until 1900 and then held steady until 2000. c. from 1800 through 1950 but have slightly increased since 1950. d. in the past two centuries but increased in the 1950's.
There are significant differences between the young-old, the old-old, and the oldest-old in their ability to live independently, to work, and in their health
Indicate whether the statement is true or false
According to Kingsley Davis and Wilbert Moore, low-rank positions in society _____. Select all, but only those that apply.
a. require the least amount of ability and talent b. are less important to the survival of society than higher ranking ones c. provide fewer rewards than higher rank positions d. are more pleasant to occupy than higher rank positions