Question $1$

$0$

Points

I understand that the problem below is used to answer the next $5$ MC questions. Please click True.

A bank wanted to measure if the time a customer spends at a drive$-$up window was within control. It took four samples of five observations each and recorded the time in minutes $($see table$).$ Use three sigma control limits to find if the process is under statistical control.

Note: Round your answer to one decimal point

Sample

Time$1$

Time$2$

Time$3$

Time$4$

Time$5$

$1$

$4\mathrm{.}5$

$4\mathrm{.}2$

$4\mathrm{.}2$

$4\mathrm{.}3$

$4\mathrm{.}3$

$2$

$4\mathrm{.}6$

$4\mathrm{.}5$

$4\mathrm{.}4$

$4\mathrm{.}7$

$4\mathrm{.}3$

$3$

$4\mathrm{.}5$

$4\mathrm{.}6$

$4\mathrm{.}4$

$4\mathrm{.}4$

$4\mathrm{.}6$

$4$

$4\mathrm{.}7$

$4\mathrm{.}6$

$4\mathrm{.}8$

$4\mathrm{.}5$

$4\mathrm{.}9$

True

False

Question $2$

$1$

Point

The sample size n is

$3$

$4$

$5$

$6$

Question $3$

$1$

Point

CL for the x$-$bar chart is

$4$

$4\mathrm{.}5$

$\mathrm{.}7$

$\mathrm{.}3$

Question $4$

$1$

Point

UCL for the x$-$bar chart is

$4\mathrm{.}7$

$4\mathrm{.}0$

$4\mathrm{.}3$

$\mathrm{.}5$

Question $5$

$1$

Point

CL for the R chart is

$2\mathrm{.}1$

$4\mathrm{.}3$

$1\mathrm{.}2$

$\mathrm{.}3$

Question $6$

$1$

Point

LCL for the R chart is

$0$

$1\mathrm{.}2$

$3\mathrm{.}2$

$\mathrm{.}3$

Question $7$

$0$

Points

I understand that the problem below is used to answer the next $5$ MC questions. Please click True.

The Crystal Sparkle Co$.$ produces glass tumblers. The plant is designed to produce $400$ tumblers per hour, and there is one eight$-$hour shift per working day. The employees take two $15-$minute breaks in each shift, one in the first four hours and one in the second four hours. The first thirty minutes of the shift are spent raising the kilns to the required temperature for firing glass. The plant usually produces about $2000$ tumblers per day. Answer the following questions by adjusting the data to one eight$-$hour shift.

True

False

Question $8$

$1$

Point

Design Capacity is

$2000$

$2500$

$3000$

$3200$

Question $9$

$1$

Point

Effective Design Capacity is

$3000$

$2700$

$2800$

$3200$

Question $10$

$1$

Point

The Efficiency is

$60\mathrm{.}5\%$

$74\mathrm{.}3\%$

$71\mathrm{.}4\%$

$90\%$

Question $11$

$1$

Point

The Utilization is

$65\mathrm{.}2\%$

$73\mathrm{.}8\%$

$41\mathrm{.}7\%$

$62\mathrm{.}5\%$

Question $12$

$1$

Point

If management wants the plant to be $85\%$ efficient, the actual output per day should be

$2800$

$2380$

$2830$

$3200$