As the size of a random sample gets larger, what does the distribution of the sample mean begin to resemble?
A. A t-statistic
B. A normal distribution
C. The underlying population distribution
D. None of the answers is correct.
Answer: B
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What is the advantage of enhanced biological phosphorus removal (EBPR) over chemical precipitation?
A) Chemical precipitation produces sludge containing arsenic. B) EBPR removes significantly more phosphorus than chemical precipitation. C) Significantly less sludge is produced by EBPR compared to chemical precipitation. D) EBPR is a more stable process.
The degradation of mRNA in the cells occurs in clusters known as
A) iRNA sites. B) sRNA regions. C) nuceoli. D) P bodies. E) N sites.
Homo erectus has been shown to have dispersed from
A. South America. B. Asia. C. North America. D. Africa. E. Europe.
Which of the following have a periplasmic space?
A. Gram-negative bacteria only B. Gram-positive bacteria only C. both Gram-positive and Gram-negative bacteria D. archaea E. eukaryotes