Question

Construct an 80% confidence interval for the difference between two population means using the sample data below that have been selected from normally distributed populations with different population variances. Sample 1 Sample 2 446 415 375 452 423 338 338 298 415 340 337 402 309 292 384 300 329 451 413 450 405 358 424 352 The 80% confidence interval is ? (?? - ??) ? . (Round to two decimal places as needed.)

          Construct an 80% confidence interval for the difference between two population means using the sample data below that have been selected from normally distributed populations with different population variances.
Sample 1 Sample 2
446 415 375 452 423 338 338 298
415 340 337 402 309 292 384 300
329 451 413 450 405 358 424 352

The 80% confidence interval is ? (?? - ??) ? .
(Round to two decimal places as needed.)

Construct an 80% confidence interval for the difference between two population means using the sample data below that have been selected from normally distributed populations with different population variances.
Sample 1 Sample 2
446 415 375 452 423 338 338 298
415 340 337 402 309 292 384 300
329 451 413 450 405 358 424 352

The 80% confidence interval is ? (?? - ??) ? .
(Round to two decimal places as needed.)

Added by Rebekah P.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Lien Le

06/16/2023

Step 1

Calculate the sample means for each sample: x1 = 376.96 x2 = 383.08 Show more…

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Construct an 80% confidence interval for the difference between two population means using the sample data below that have been selected from normally distributed populations with different population variances. Sample 1: 446, 415, 375, 452, 415, 340, 337, 402, 329, 451, 413, 450 Sample 2: 423, 338, 338, 298, 309, 292, 384, 300, 405, 358, 424, 352 The 80% confidence interval is <= (μ1 - μ2) <= . (Round to two decimal places as needed.)