Solve the problem using your calculator.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. Use linear regression to find a linear function that predicts a student's current GPA as a function of his or her entering GPA. Entering GPA Current GPA 3.5 3.6 3.8 3.7 3.6 3.9 3.6 3.6 3.5 3.9 3.9 3.8 4.0 3.7 3.9 3.9 3.5 3.8 3.7 4.0
A. y = 2.51 + 0.329x
B. y = 5.81 + 0.497x
C. y = 4.91 + 0.0212x
D. y = 3.67 + 0.0313x
Answer: D
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Solve the problem.The following graph shows data for a recent train ride from New York to Toronto. At what rate did the train travel?
A. 60 miles per hour B. 50 miles per hour C. 120 miles per hour D. 65 miles per hour
Solve the problem.A piece of cheese weighing 
pound is to be divided into 6 equal portions. What will be the weight of each portion?
A. 
pound
B. 
pound(s)
C. 15 pounds
D. 2
pound(s)
Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 2y2 = 2x2 - 2y2 = 8
A. (
, 
), (-
, -
)
B. (
, 
), (
, -
), (-
, 
), (-
, -
)
C. (
, 
), (
, -
)
D. no solution