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Homework_10_Answer_Key

Homework_10_Answer_Key - wouM be t o c ondude that he m ean...

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' b) A Tipe 1 error wouM be t o condude that +he mean diameter is no+- egual to 3 inches when, in Sac+, if is egual .to 3 inches. ATyp& II error would be to conclude ha4 the mean diameter . is equal f-o 3 inches when, in Sact, it is egwl to something diGf erent. C) 83,000 a day is the price 05 a Type I error because it is the COS+ 05. having a problem- solving team that is trying to 5ix a non-existant pro b~em. .b) 8 &-=o.oas @&A Statistic Q There is su6Sieient evidence Sor the managec to rneonc\t.de +hat the average time b Sill customers' orders is greater +han C days (goal not being met).
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r$ +he average )ime t o Sill eustorners' orders is 6 days (null hypothesis is true), then the probabili)y 4 ge*lng data +hat contrndicts +his claim more strong\y l h a n our data does is 0.0031. . dl The p-value represenfs She minimum significance level needed -to ceject Ho. Theregore, a significance level o+ 0.0031 or greater would lead the manager to conclude +ha+ the mail-order business fills ~ustomers' orders in more t h a n 6 days.
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  • Spring '08
  • VANES,C.
  • Statistical hypothesis testing, ean d iameter, eject a+ loruec, su6Sieient evidence Sor, eject Ho, ail-order business fills

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