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A total of 280 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour...

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General Management

A total of 280 observations of Bob Ramos, an assembly-lineworker, were made over a 40-hour work week. The sample also showedthat Bob was busy working (assembling the parts) during 240observations. (Round all intermediate calculations to at least twodecimal places before proceeding with further calculations.)

a) a) The percent of time Bob is working =85.71

b) The number of observations that need to be taken of Bob to be90 % confident with 5 % acceptable error = __

c) Was the sample size adequate?

Answer & Explanation Solved by verified expert
3.8 Ratings (470 Votes)
To be calculated a Percent of time Bob is working b Number of observations required or sample size 90 confidence 5 acceptable error c If the sample size is adequate or not Given Values Sample size S    See Answer
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