Regression line for a data set
A regression line for a data set was found to be yt= 1.25 - 3.84x . What is the point prediction of y for x = 20?
A. 78.05
B. -76.8
C. 76.8
D. -75.55
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Bob is asked to design a system for heating process water in a chemical plant. What capacity of natural gas burners must Bob provide, measured in BTU/H?
An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and post-training customer survey. Seven customers were randomly selected and completed both surveys. The results follow.
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The vertical component of the landing speed of a parachute is to be less than 20 ft/s. The total weight of the jumper and chute is 250 lb. Determine the minimum diameter of the open parachute.
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