Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Use linear regression to find a linear function that predicts a student's score as a function of the number of hours he or she studied.
A. y = 67.3 + 1.07x
B. y = 33.7 - 2.14x
C. y = 33.7 +2.14x
D. y = -67.3 + 1.07x
Answer: A
Mathematics
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A. 
B. 
C. 10
D. 
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What part of the object or set of objects is shaded?
A. 
B. 
C. 
D. 
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Use the formulas for measuring sounds to find the missing value. 
The intensity I of a sound is given. Find the loudness L of the sound.I = 10-7 W/m2
A. L = 70 dB B. L = 60 dB C. L = 190 dB D. L = 50 dB
Mathematics
You are given the shape of the vertical ends of a trough that is completely filled with water. Find the force exerted by the water on one end of the trough. (The weight density of water is 62.4 lb/ft3.)
a. 780 lb
b. 312 lb
c. 156 lb
d. 1,560 lb
Mathematics