We had n=150 and σ=6.2, use the added information that the efficiency experts obtained the sample...

We had n=150 and σ=6.2, use the added information that the efficiency experts obtained the sample mean (x̅=69.5) to calculate a 95% confidence interval for the average mechanical aptitude of assembly line workers in the given industry.

Expert Solution

orchestra answered 1 year ago

Use the sample information x¯ = 43, σ = 3, n = 13 to calculate the...

Use the sample information x¯ = 43, σ = 3, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval...

Use the sample information x¯ = 40, σ = 7, n = 13 to calculate the...

Use the sample information x¯ = 40, σ = 7, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from ___ to ___ (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from ___ to ___ (c) 99 percent confidence. (Round your answers to 4...

Use the sample information x⎯⎯ = 36, σ = 6, n = 11 to calculate the...

Use the sample information x⎯⎯ = 36, σ = 6, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to? (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to ? c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence...

Use the sample information x¯ = 38, σ = 4, n = 11 to calculate the...

Use the sample information x¯ = 38, σ = 4, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population 90% confidence interval is from 95% confidence interval is from 99% confidence interval is from

Use the sample information x¯ = 41, σ = 4, n = 20 to calculate the...

Use the sample information x¯ = 41, σ = 4, n = 20 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval...

A sample of n = 9 scores is obtained from a normal population distribution with σ...

A sample of n = 9 scores is obtained from a normal population distribution with σ = 12. The sample mean is M = 60. a. With a two-tailed test and α = .05, use the sample data to test the hypothesis that the population mean is μ = 65. b. With a two-tailed test and α = .05, use the sample data to test the hypothesis that the population mean is μ = 55. c. In parts (a) and...

Use the sample information x⎯⎯x¯ = 40, σ = 3, n = 18 to calculate the...

Use the sample information x⎯⎯x¯ = 40, σ = 3, n = 18 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence...

Use the sample information x¯x¯ = 43, σ = 6, n = 13 to calculate the...

Use the sample information x¯x¯ = 43, σ = 6, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence...

Use the sample information x¯x¯ = 40, σ = 7, n = 13 to calculate the...

Use the sample information x¯x¯ = 40, σ = 7, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from _____ to _____ (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from _____ to _____ (c) 99 percent confidence. (Round your answers to 4...

Use the sample information x¯= 40, σ = 7, n = 13 to calculate the following...

Use the sample information x¯= 40, σ = 7, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from ___ to___ (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from ___ to____ (c) 99 percent confidence. (Round your answers to 4 decimal places.) ...

Question