An experiment was performed on a certain metal to determine if the strength is a function of heating time. Results based on 10 metal sheets are given below. Use the simple linear regression model.
∑X = 30
∑X² = 104
∑Y = 40
∑Y² = 178
∑XY = 134
Find the t statistic and test H₀: b₁≤ 0 vs, H_a: b₁ > 0 at α = .05.

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The Answer of An experiment was performed on a certain metal to determine if the strength is a function of heating time. Results based on 10 metal sheets are given below. Use the simple linear regression model. ∑X = 30 ∑X² = 104 ∑Y = 40 ∑Y² = 178 ∑XY = 134 Find the t statistic and test H₀: b₁≤ 0 vs, H_a: b₁ > 0 at α = .05.

An Experiment Was Performed on a Certain Metal to Determine