QUESTION 2 6.54c: Provide the upper limit of the confidence interval. Use 2 decimals for your answer Hint: See L-15 pdf and lecture, page 4-7 (Exercise 6.5)
QUESTION 2 6.54c: Provide the upper limit of the confidence interval. Use 2 decimals for your answer Hint: See L-15 pdf and lecture, page 4-7 (Exercise 6.5)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:Med.
6.54 To assess whether degreed nurses received a more comprehensive training than reg-
istered nurses, a study was designed to compare the two groups. The state nursing licensing
board randomly selected 50 nurses from each group for evaluation. They were given the state
licensing board examination, and their scores are given in the following table.
Degreed
429
408
418
402
424
369
372
406
391
404
Nurses
408
417
422
408
365
412
379
423
412
420
382
394
399
403
373
434
406
428
398
418
383
395
408
402
416
424
439
382
371
386
382
404
381
430
394
410
382
410
394
404
Registered
364
330
368
342
327
310
347
361
364
358
Nurses
362
356
333
347
356
306
375
345
420
332
354
390
382
342
348
389
354
338
328
339
320
382
295
341
387
284
383
311
387
397
363
365
309
327
321
352
416
380
341
330
a. Can the licensing board conclude that the mean score of nurses who receive a BS
in nursing is higher than the mean score of registered nurses? Use a = .05.
b. Report the p-value for your test.
c. Estimate the size of the difference in the mean scores of the two groups of nurses
using a 95% confidence interval.
d. The mean test scores are considered to have a meaningful difference only if they
differ by more than 40 points. Is the observed difference in the mean scores a
meaningful one?

Transcribed Image Text:QUESTION 2
6.54c: Provide the upper limit of the confidence interval. Use 2 decimals for your
answer
Hint: See L-15 pdf and lecture, page 4-7 (Exercise 6.5)
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