Suppose you have a random sample of 2179 credit scores from a population of mortgage applicants with a sample mean of 620 and known population standard deviation of 70, and would like to calculate the 99% confidence interval of the population mean credit score. Which of the following would be the correct construction?
A. 620 ± 2.58 
B. 2179 ± 1.96 
C. 620 ± 1.65 
D. 620 ± 2.58 
Answer: D
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Most mineral ions that plants need are
a. moved into the symplast via active transport. b. moved into the transmembrane pathway via bulk flow. c. moved into the apoplast via facilitated diffusion. d. moved into the symplast via facilitated diffusion. e. moved into the apoplast via bulk flow.
Four of the five choices listed below can upset
genetic equilibrium. Select the exception. a. interbreeding paternal or fraternal relatives b. genetic drift c. mutation d. natural selection e. gene flow
A fastidious organism might be grown on which of the following types of media?
A) transport media B) reducing media C) enriched media D) differential media E) selective media
The distinction between causality and correlation is best described as:
A. causality implies positive amounts of co-movement, correlation implies negative amounts of co-movement. B. causality implies a change in one variable creates a change in another, correlation implies variables move together. C. correlation implies a change in one variable creates a change in another, causality measures co-movement. D. None of the answers is correct.