9 4or qo clgtsv S U Together we will work this Problem T Jlt T tS ffi f 7

# 9 4or qo clgtsv s u together we will work this

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9*, 4o'^r qo^ cl+gtsv' SUTogether we will work this Problem:
T !."J',+lt '*T t"S ffi f'\$ # 7Recently, e driving distance of PGA golfers was fou yards. Suppose I designeda new g0 claim will increase the distance to more ds. To test my ne\$/ invention,I rancloml 15 pro golfers to hit a drive with the ball, s in yards for each drive areas follows:275295288295 326278 308314 278294290280284283310a, To test nry clainr, follow the steps we just discussed and construct a hypothesis test usinga : 0.10,b. ldentify the range for the p-value,c, Use Excel to determine the precise p-valueAnswers can be found on a Page 433Now Your Turn:7A 22 54 57A-7+ts #8An unnamed staiistics textbook author was overheard by his wife saying that he spends an average 0fgne h0ur each weekend doing household chores (yes, even authors have their to-do tists). The author'swife, having her doubts about this and knowledgeable in hypothesis testing as a result of her proofread-ing his chapters, secrefly recorded the number of minutes he spent doing his chores Over 1 1 randomlyselected weekends (the clipboard and stopwatch should have caught my, I mean his, attention). Theresults are as follows:OU1256561043a. Dges the author's wife have enough evidence to challenge his claim using d : 0'05?9.4 Hypothesis Testing for a Population Proportionstep 1.: Te-ui;{.t tt L h,.-t( a^L /{or*tttut N'1pht"*es'---"[f ve-- vvr- {Istep 2: 9* a- ualur- t* fu er'y^{t't** i"t& | AStep 3:Step 4:
9.26An increased number of U.S. colleges have been usingonline resources such as Facebook and Google to researchapplicants, According to Kaplan Test Prep, 26Vo of admis-sions officers indicated that they visited an applying stu-dent's social networking page in20l2. A random sampleof 100 admissions officers was recently selected and itwas found that 35 of thern visit the social networking sitesof students applying to their college. Using a : 0.05,answer the following questions:a. Does this sample provide support for the hypothesisthat the proportion of admissions officers who visitan applying student's social networking page has in-creased since 20L22b. Determine the p-value for this test.

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• Fall '14
• Null hypothesis, Statistical hypothesis testing