Step 1:** Calculate the linear regression model for the weight data provided:
Given data points:
(1, 5)
(2, 10)
(3, 15)
(4, 20)
(5, 25)
(6, 30)
Using the formula for linear regression:
\[ b = \frac{n \sum xy - \sum x \sum y}{n \sum x^2 - (\sum x)^2} \]
\[ a =
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