Question

Use the sample information x̄ = 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.) The 99% confidence interval is from to

Name: use the sample information x x 40 7 n 13 to calculate the following confidence intervals for assuming the sample is from a normal population a 90 percent confidence round your answers to 4 d 95922
Uploaded: 2023-02-26T17:38:02-08:00
Duration: 4 min 6 s
Channel: Sri K
Description: use the sample information x x 40 7 n 13 to calculate the following confidence intervals for assuming the sample is from a normal population a 90 percent confidence round your answers to 4 d 95922

          Use the sample information x̄ = 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.)

The 99% confidence interval is from ____ to ____

Added by Laurie S.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Sri K

02/26/2023

Step 1

Given: Sample mean (x̄) = 40 Population standard deviation (σ) = 7 Sample size (n) = 13 For 90% confidence level: Critical value (z) = 1.645 Margin of error = z * (σ / √n) Margin of error = 1.645 * (7 / √13) = 3.1937 For 95% confidence level: Critical value (z) Show more…

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Use the sample information x̄ = 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.) The 99% confidence interval is from ____ to ____