$1.$ Assignment should be hand written,

Exercise $1$:

XYZ Company manufactures $24$ lead IC$,$ of lead length equivalent to $15$ mm $+/-2$mm$.$ The following are the gathered data for $5$ hrs for the $5$ days.

Make the

$(1)$checksheet using $3-$ class interval beginning with the smallest value and the

$(2)$histogram$.$ Also show the histogram

$(3)$control chart using daily average.

$8$am $9$am $10$am $11$am $12$nn

Sun $1512161920$

Mon $1012181012$

Tues $1719201718$

Wed $121520812$

Thurs $812161819$

Exercise $2$:

Intel is an electronics manufacturing company that produces different IC packages $.$ For the last quarter of the year, $40$ Lead ceramics package$$s productivity is going down. Details of the findings are as follows: the standard length of the lead is $1\mathrm{.}75$ cm $+/-\mathrm{.}10,$ the average lead measurement per month are as follows:

Jan $1\mathrm{.}75,$ Feb $1\mathrm{.}60.$ March $1\mathrm{.}65,$ April $1\mathrm{.}70,$ May $1\mathrm{.}72,$ June $1\mathrm{.}85,$ July $1\mathrm{.}98$ August $1\mathrm{.}70$ Sept $$ I$\mathrm{.}2,$ Oct $1\mathrm{.}55,$ Nov $1\mathrm{.}6$ Dec $1\mathrm{.}50.$

Exercise $3$:

Given below are the values of $2$ variables percentage of discount and the volume of item to be purchased during Ramadan Sale. What tool will you use to present the data?

Exercise $4$:

Intel is an electronics manufacturing company that produces different IC packages $.$ For the last quarter of the $40$ Lead ceramics package, the productivity is going down. For cases like this, it is required that the QA should conduct investigation $.$ Upon analysis, the quality assurance found out that

$(1)750$ pcs are having misaligned lead due to machine malfunction while

$(2)200$ pcs are wrongly stamped with its product code.

$(3)100$ pcs are rejected due to dust$/$dirt while

$(4)25$ pieces are rejected due to failure in the hot temp test.

A failure is occurring if there is issue with the process or method.

What appropriate quality tool will you use to present the situation?

Exercise $5$:

On Semiconductor is an electronics manufacturing company that produces different IC packages namely plastic and ceramics along with different lead types of $14$ L$,18$L$,24$ L and the $40$ L microprocessor. The last $2$ quarters show an issue with the $24$ Lead plastic package where its rejection level is increasing. Upon investigation, it was found out that $250$ pcs have been rejected due to bent leads. The lead cutting machine has been set up wrongly by the technician while $150$ pcs have been stamped with its product code but rejected due to substandard ink used for stamping. In addition, $200$ pcs have been seen to have contamination while $125$ pieces are rejected to issue in the normal temperature testing method. The packaging has been an issue with $2$ batches composed of $300$ pcs with wrong documents in it$.$ It has been assumed that the staff has committed mistake in putting the correct documents.

a$.$ Use the data given to draw the appropriate quality tool.

b$.$ Identify the percent contribution of each of the factors that contribute to the problem.