Suppose a sample of five econometrics students' heights were: 69 inches, 73 inches, 65 inches, 67 inches, and 71 inches. The standard deviation of the heights will be in what units?
A. Inches
B. Squared inches
C. Z-score units
D. Standard units
Answer: A
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Which of the following is an advantage of the
three-chambered heart over the two-chambered heart?
a. blood flow is faster when there are two circuits instead of one circuit b. blood pressure is independently controlled in each vascular circuit c. oxygen-rich and oxygen-poor blood do not mix d. capillary beds are possible with a threechambered heart but not a two-chambered heart e. more than one of these is an advantage of the three-chambered heart over the twochambered heart
All of the following are respiratory surfaces EXCEPT for
A) tracheae of a fly. B) alveoli of dogs. C) skin of earthworms. D) air sacs of birds. E) gills of fish.
(A)_________ quantifies hydrogen atoms that are excited by magnetic wave. The principle of this imaging technique is also applied in (B)_____________.
a. (A) Magnetic Resonance Imaging (MRI), (B) Positron Emission Tomography (PET) b. (A) Magnetic Resonance Imaging (MRI), (B) Diffusion Tensor Imaging (DTI) c. (A) Diffusion Tensor Imaging (DTI), (B) Computed Tomography (CT) d. (A) Diffusion Tensor Imaging (DTI), (B) electroencephalography (EEG)
Is a virus considered alive?
A. Yes, it possesses all of the requirements for life. B. Yes, it possesses enough of the requirements for life to be considered living. C. No, it does not possess any of the requirements for life. D. No, it does not possess all of the requirements for life.