Answer questions $5,$ and $6$ based on the case and data given in the following: The worker on the picture is performing quality control checks on car doors. The Industrial Engineer applies work sampling for $3$ days hours$)$ and makes $120$ observations. The worker was observed while performing quality control on doors in $72$ observations. In that $3-$days period, $288$ doors are controlled. Mean Westinghouse rating for the worker is $1\mathrm{.}1$ and total allowances for this task is $25\%.($Round your results to one decimal$)$

$5.(4$ points$)$ What is the cycle time for this quality control task $($in minutes$)?$

a$.)5$min.

b$.)3\mathrm{.}6$min.

c$.)3$min.

d$.)4\mathrm{.}2$min.

e$)12$min.

$6.(4$ points$)$ What is the standard time for this quality control task $($in minutes$)?$

a$.)6$min.

b$.)5\mathrm{.}8$min.

c$.)14\mathrm{.}4$min.

d$.)5\mathrm{.}2$min.

e$)4\mathrm{.}1sec.$

$7.(4$ points$)$ Answer according to essential reading paper: Al$-$Saleh K$.,2011,$ "Productivity improvement of a motor vehicle inspection station using motion and time study techniques", Journal of King Saud University Engineering Sciences, $23,33-41.$

Which option below is correct about the study in this article?

$1.$Flow chart and time study were applied to analyse vehicle inspection process.

$2.$ The proposed improvement was to reduce number of inspectors from $2$ to $1$

$3.$ They applied methods analysis to all stages of vehicle inspection.

$4.$ They used two handed process chart to analyse movements of operators.

a$.)$ Only $1$

b$.)3$ and $4$

c$.)2,3,$ and $4$

d$.)$ Only $4$

e$)1$ and $4$

$8.(4$ points$)$ Answer according to essential reading paper: Al$-$Akkoni et al $2019,$ "Applications of work study techniques for improving productivity at assembly workstation of valve mamufacturing industry" IOP Conf. Ser.: Mater. Sci. Eng. $561$

Which option below is correct about the study in this article?

$1.$In the proposed method, the flow of the process between work stations is re$-$arranged.

$2.$ They used flow process chart and flow diagram to analyse the valve manufacturing process.

$3.$The improvements reduced the non$-$value added time and distance travelled during the process.

$4.$They used gang chart to analyse team$-$work stages.

$5.$The new process flow increased travel distance and number of transportation steps.

a$.)2$ and $4$

b$.)1$ and $5$

c$.)1,2$ and $3$

d$.)$ Only $3$

e$)$ Only $4$

$.(4$ points$)$ Which one is a sign of non$-$value added content on a flow diagram?

a$.)$ Intersections

b$.)$ Backtracking

c$.)$ Distance

d$.)$ Transportation

e$.)$ All of them

$4$