Suppose a least-squares regression line is given by y = 4.302x- 3.293. What is the mean value of the response variable if x = 20? *... Ho 20 (Round to one decimal place as needed.)

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A: Given Information: Sample size (n) = 22  Mean (u) = 12 Standard deviation (s) = 5.4

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A: Step 1: Step 2: Step 3: Step 4:

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A: The mean is $31,000, standard deviation is $3000.

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A: Let us take:  u→=0, 0, 0v→=1, 2, 3w→=4, 5, 6

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A: The area between 7 and 11.9 represents the area to the right of 7 and to the left of 11.9. This can…