For each of the following sample results, construct the requested confidence interval Assume that the data come from normally distributed populations (a) n 14, x 30, s 2 17 2 98 confidence for 2 (b) n 9, x 7 2, s 1 53 90 confidence for 2 (c) n 22, x 136, s 6 5 85 confidence for 2 (d) n 19, s 2 22 15 80 confidence for 2

Question: For each of the following sample results, construct the requested confidence interval. Assume that the data come from normally distributed populations. (a) n = 14,

For each of the following sample results, construct the requested confidence interval. Assume that
the data come from normally distributed populations.
(a) n = 14, x̅ = 30, s² = 17.2; 98% confidence for σ²
(b) n = 9, x̅ = 7.2, s = 1.53; 90% confidence for σ²
(c) n = 22, x̅ = 136, s = 6.5; 85% confidence for σ²
(d) n = 19, s² = 22.15; 80% confidence for σ²

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