Consider the following summary data on the modulus of elasticity (x 106 psi) for lumber of three different grádes. Grade Jx₁. Si 1 9 1.64 0.28 2 9 1.54 0.23 3 9 1.43 0.25 You can use the Distribution Calculators page in SALT to find critical values and/or p-values to answer parts of this question. Compute a 95% t CI for 0 = 1/2(μ₁ + H₂) H3. (Round your answers to three decimal places.) 3) x 106 psi

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