In this probilem, assume that the distribution of differences is approximately n

Question

In this probilem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom a.f. not in the Student's t table, use the closest d.f, that is this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "corservative answer s t table, use the closest d.f. that is smaller. In some situations Do professional golfers play better in ther last round? Let row B represent the score in the fourth (and final) round, and let row A represent t A radom sample of finalists in the British Open gave the followng data their first and last riud. n the the score in the fiest round of a professional golf tournament data for their first and last rounds in the tournament Do the data indicate that the population mean score on the last round is higher than that on the first? Use a 1% level of significance. (Let d-B-A) a) what is the level of significance? 04 State the nul and alternate hypotheses. will you use a lel tailed, right-taled, or two-taled test? what sampling distribution will you use? What aessumptions are you The standard norma. we mame that d hasan approximate" uniform distribution. distribution w.ou use, what assumptions ereyoumating? . The Student's t. we assume that d has an approsimately nermal astrou The Student's t. We assume that d hes an approximately unform distribution o The standard normal. We emume that d has on approximately normal distribution " of the sampl·tast satte ound you, omes, to three dirrial pio..) what i& the v (c) rind (or estimate) the Pvahe (Round your answer to four decimal places)

Explanation / Answer

first question answer

using stat disk

Alternative Hypothesis:
µ1- µ2>0

Test Statistic, t: 1.6570
Critical t:        2.593357
P-Value:           0.0588

Degrees of freedom: 15.4625

98% Confidence interval:
-1.695177 < µ1-µ2 < 7.695177

2nd question

Alternative Hypothesis:
µ1 - µ2not equal0

Test Statistic, t: 0.7062
Critical t:        ±1.781688
P-Value:           0.4935

Degrees of freedom: 12.0486

90% Confidence interval:
-8.376161 < µ1-µ2 < 19.37616

3rd question image too blurry to answer

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