Determine the appropriate critical value(s) for each of the following tests concerning the population mean: a. upper-tailed test: α = 0.005; n = 36; σ = 4.0 b. lower-tailed test: α = 0.025; n = 27; s = 9.0 c. two-tailed test: α = 0.05; n = 31; s = 5.3 d. two-tailed test: α = 0.10; n = 25; σ = 5.9
Added by Ricardo A.
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005, n = 36, and σ = 4.0, we use the z-table to find the critical value. The critical value is 2.575. Show more…
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David N.
a. Determine the appropriate critical value for an upper-tailed test: α = 0.005; n = 36; σ = 5.0 The critical value(s) is(are) 2.33 (Round to two decimal places as needed. Use a comma to separate answers as needed.) b. Determine the appropriate critical value for a lower-tailed test: α = 0.025; n = 27; s = 7.0 The critical value(s) is(are) -1.71 (Round to two decimal places as needed. Use a comma to separate answers as needed.) c. Determine the appropriate critical values for a two-tailed test: α = 0.02; n = 31; s = 4.5 The critical value(s) is(are) ±2.39 (Round to two decimal places as needed. Use a comma to separate answers as needed.) d. Determine the appropriate critical values for a two-tailed test: α = 0.01; n = 25; σ = 3.2 The critical value(s) is(are) ±2.57 (Round to two decimal places as needed. Use a comma to separate answers as needed.)
Clarissa B.
Determine the appropriate critical value(s) for each of the following tests concerning the population mean: a. upper-tailed test: α = 0.10; n = 36; σ = 4.0 b. lower-tailed test: α = 0.01; n = 26; s = 6.0 c. two-tailed test: α = 0.20; n = 31; s = 4.5 d. two-tailed test: α = 0.05; n = 25; σ = 4.4 a. Determine the appropriate critical value for an upper-tailed test: α = 0.10; n = 36; σ = 4.0. The critical value(s) is(are) 1.28. (Round to two decimal places as needed. Use a comma to separate answers as needed.) b. Determine the appropriate critical value for a lower-tailed test: α = 0.01; n = 26; s = 6.0. The critical value(s) is(are) -2.49. (Round to two decimal places as needed. Use a comma to separate answers as needed.) c. Determine the appropriate critical values for a two-tailed test: α = 0.20; n = 31; s = 4.5. The critical value(s) is(are) 1.31, -1.31. (Round to two decimal places as needed. Use a comma to separate answers as needed.) d. Determine the appropriate critical values for a two-tailed test: α = 0.05; n = 25; σ = 4.4. The critical value(s) is(are) . (Round to two decimal places as needed. Use a comma to separate answers as needed.)
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