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.
Genetic drift and population size.
Gaser and Schlaug's study of the size of visual, motor, and auditory nuclei in the brains of mu
Population growth
A hypothesis test is performed to test the claim that a population proportion is greater than ...
Changes in the size of the thoracic cavity during the respiratory cycle
HIV in population worldwide