Solve the problem.Use linear regression to find a line representing weight, in pounds, as a function of height, in inches, of men. Then, predict the weight of a man who is 68 inches tall to the nearest tenth of a pound. The following data are the (height, weight) pairs for 8 men: (66, 150), (68, 160), (69, 166), (70, 175), 
(73, 198), (74, 206).
A. 161.2 lb
B. 165.1 lb
C. 151.4 lb
D. 160.0 lb
Answer: A
Mathematics
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Find the mean for the given frequency distribution.Find the approximate mean for the grouped frequency distribution. Use the class midpoint to represent each class. Round your answer to two decimal places.
A. 78.12 B. 77.83 C. 74.50 D. 79.50
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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
Mathematics
Simplify.1260 ÷ (63 ÷ 9)
A. 9 B. 63 C. 180 D. 20
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Complete.63 t = 
kg
A. 0.063 B. 0.63 C. 6300 D. 63,000
Mathematics