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 2 358 45 297 394 344 417 415 422 427 373 405 288 375 339 343 396 368 355 301 360 422 351

          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 2
358
45
297
394
344
417
415
422
427
373
405
288
375
339
343
396
368
355
301
360
422
351

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 2
358
45
297
394
344
417
415
422
427
373
405
288
375
339
343
396
368
355
301
360
422
351

Added by Antonia G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Ivan Kochetkov

04/29/2024

Step 1

For Sample 1: Mean (M1) = (358 + 45 + 297 + 394 + 344 + 417) / 6 = 351.5 Variance (V1) = [(358-351.5)^2 + (45-351.5)^2 + (297-351.5)^2 + (394-351.5)^2 + (344-351.5)^2 + (417-351.5)^2] / (6-1) = 6472.5 For Sample 2: Mean (M2) = (415 + 422 + 427 + 373 + 405 + 288 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. able[[,Question Viewer,,Sample 2],[358,45,297,394,344,417],[415,422,427,373,405,288,375,339],[343,396,368,355,301,360,422,351]] 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 2: Question Viewer, 45, 297, 394, 344, 417, 358, 427, 373, 405, 288, 375, 339, 415, 422, 396, 368, 355, 301, 360, 422, 351, 343.