A population consists of 3 Democrats and 2 Republicans. Assume that samples of size 3 are randomly selected with replacement from this population.
Which of the following statements is (are) true?
A: Within each sample, the proportion of Democrats will be 3/5
B: If you list the 125 different possible samples of size 3 and find the proportion of Democrats in each sample, the mean of the 125 sample proportions will be 3/5
C: The mean of the sampling distribution of proportions of Democrats is 3/5
A) C only B) B and C C) All of them D) B only
Question 2
If the results of a study using the Spearman correlation coefficient were reported as rS(28) = -.44, p < .05, then which of the following statements is true?
a. H0 was S = + or - .44.
b. The X and Y variable are significantly negatively related.
c. rS crit = + or - .44.
d. H1 was S = 0.
Body size and population density of herbivorous mammals
Major features of Homo erectus include increased brain size, an angular vault, and cranial superstru
Sources of income for U.S. population aged 65 and over.
The Effect of Group Size on Relationships
Size-exclusion chromatography (aka gel-filtration)
Population growth and growth rate, 1950 - 2100