Savannah lives in America and is 45 inches tall and weighs 45 pounds. Knowing her height and weight, it is safe to say that Savannah is around ____________
6 years old.
2 years old.
4 years old.
8 years old.
6 years old.
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The "best fitting line" is that regression line that
a. minimizes the errors of prediction. b. minimizes each squared error of prediction. c. minimizes the sum of squared errors of prediction. d. hits the most points as it goes through the scatterplot.
If you believe "nature" in the nature-nurture controversy is most important, you are most likely to agree that:
a. Aristotle and the empiricists were correct to say the mind is a tabula rasa at birth. b. personality is determined more by one's genes than by one's early childhood experiences c. people who are violent probably became that way because of violence in their environment d. sex differences in behavior are mostly due to cultural beliefs about how males and females should act
Frequency theory appears to account for the ear's responses to frequencies up to ______ Hz
a. 4,000 c. 12,000 b. 8,000 d. 16,000
If the nose of the car is initially at position with an initial velocity and no applied acceleration or braking force, graph the velocity of the car for positive time.
A car rolling on a hill can be modeled as shown in Figure E-25. The excitation is the force for which a positive value represents accelerating the car forward with the motor and a negative value represents slowing the car by braking action. As it rolls, the car experiences drag due to various frictional phenomena that can be approximately modeled by a coefficient which multiplies the car’s velocity to produce a force which tends to slow the car when it moves in either direction. The mass of the car is m and gravity acts on it at all times tending to make it roll down the hill in the absence of other forces. Let the mass m of the car be 1000 kg, let the friction coefficient be and let the angle be .