Q1) In a study, the time (measured or observed time) for a worker to do a job was measured as 5 minutes. The tempo of the worker was appreciated as 140% and the shares were estimated to be 5%. Calculate the standard time for the activity. Calculate how many pieces of work the worker will do in a working day. TZ=GZDSZ=TZ(1+)SQ=SZT A study is carried out with work sampling at a workstation. After 1000 observations, it was observed that machine A Q2) was empty 250 times. Determine between which limits the operating efficiency (number of runs) of the machine can vary with 95% confidence. =Npq=zhp+q=1q=1pise;p+(1p)=1Pmin=PortPort100hPmax=Port+Port100h As a result of a preliminary study, it was seen that 80 of the machines were working as a result of 100 observations Q3) made at random intervals. a) Specify sample size for 95% confidence level and 10% absolute error. For 95% confidence level: Z=1.96 (taken from normal curve area table) b) What would the sample size be if the absolute error was accepted as 5% instead of 10% ? c) If the confidence level is 80.64% and the absolute error is 10%, what will the sample size be? (The table value for the 80.64% confidence level is Z=1.30 ) =Npqp+q=1q=1pise;p+(1p)=1 Sample Size N=(zh)2p(1p)