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Category > Business & Finance Posted 21 May 2017 My Price 5.00

A total of 300 observations of Bob Ramos

A total of 300 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour workweek. The sample also showed that Bob was busy working (assembling the parts) during 250 observations.

a) Find the percentage of time Bob was working.

b) If you want a confidence level of 95%, and if ±3% is an acceptable error, what size should the sample be?

c) Was the sample size adequate?

 

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SmartExpert
(118)
Status NEW Posted 21 May 2017 10:05 AM My Price 5.00

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Attachments

file 1495361845-Sampling Size.xlsx preview (177 words )
19-----------181-----------14&-----------amp-----------;am-----------p;i-----------nfo-----------Id=-----------492-----------976-----------sam-----------pli-----------ng -----------Siz-----------eA -----------tot-----------al -----------of -----------300----------- ob-----------ser-----------vat-----------ion-----------s o-----------f B-----------ob -----------Ram-----------os,----------- an----------- as-----------sem-----------bly------------li-----------ne -----------wor-----------ker-----------, w-----------ere----------- ma-----------de -----------ove-----------r a----------- 40------------ho-----------ur -----------wor-----------kwe-----------ek.----------- Th-----------e s-----------amp-----------le -----------als-----------o s-----------how-----------ed -----------tha-----------t B-----------ob -----------was----------- bu-----------sy -----------wor-----------kin-----------g (-----------ass-----------emb-----------lin-----------g t-----------he -----------par-----------ts)----------- du-----------rin-----------g 2-----------50 -----------obs-----------erv-----------ati-----------ons-----------.Nu-----------mbe-----------rsN-----------umb-----------er -----------of -----------Obs-----------erv-----------ati-----------ons----------- ma-----------deN-----------umb-----------er -----------of -----------Tim-----------es -----------Wor-----------kin-----------g o-----------bse-----------rve-----------d a-----------) F-----------ind----------- th-----------e p-----------erc-----------ent-----------age----------- of----------- ti-----------me -----------Bob----------- wa-----------s w-----------ork-----------ing-----------.pe-----------rce-----------nta-----------ge -----------of -----------tim-----------e B-----------ob -----------was----------- wo-----------rki-----------ng=-----------Num-----------ber----------- of----------- ti-----------mes----------- Wo-----------rki-----------ng -----------obs-----------erv-----------ed -----------/Nu-----------mbe-----------r
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