Suppose you've run a regression relating log(Output) to log(Worker Hours) in Excel. You are willing to make the necessary assumptions to deduce causality and run hypothesis tests. Your results are as follows: Coefficients Standard Error t Stat P-value Intercept 17.4583044 28.47075584 0.613201297 0.541240031 Log(Worker Hours) 2.699483287 0.711729096 3.792852225 0.000264681 How should you interpret the coefficient on Log(Worker Hours) of 2.69?
A. A 1 unit increase in Worker Hours leads to a 2.69% increase in Output.
B. A 1% increase in Worker Hours leads to a 2.69% increase in Output.
C. A 1% increase in Worker Hours leads to a .0269% increase in Output.
D. A 2.69% increase in Worker Hours leads to a 1% increase in Output.
Answer: B
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In Thomas Hunt Morgan's experiments, the ratio of red-eyed flies to white-eyed flies appeared to follow a simple Mendelian pattern of inheritance. What observation(s) did he make that led to his conclusion that the white-eyed trait was actually not a simple Mendelian trait?
A. He was able to correlate the expression of white eyes to the inheritance of an X chromosome. B. He saw that only males had white eyes. C. He observed that the white-eyed trait was recessive. D. He was able to correlate the expression of white eyes to the inheritance of a Y chromosome because only F2 males had white eyes and the trait is recessive. E. He was able to correlate the expression of white eyes to the inheritance of an X chromosome because only F2 males had white eyes and the trait is recessive.
The maintenance of the volume and composition of
body fluids is the primary responsibility of which system? a. integumentary b. immune c. digestive d. urinary e. circulatory
Strains of Mycobacterium tuberculosis called MDR are resistant to
A) levofloxacin. B) isoniazid. C) rifampin. D) isoniazid and rifampin. E) levofloxacin, isoniazid and rifampin.
To be a successful cell evolutionarily, the earliest cells had to:
A) consume oxygen. B) reproduce. C) have mitochondria. D) photosynthesize.