When does the out-of-control behavior occur

Assignment Help Project Management

Reference no: EM13537603

Viscosity is one of the important quality characteristics of paste ink used in printing presses. A viscosity measure is taken at the end of production of each batch of ink. Viscosity measures for 50 consecutive batches have been recorded as follows:

Sample	Viscosity	Sample	Viscosity
1	305	26	291
2	274	27	301
3	290	28	290
4	314	29	290
5	291	30	308
6	315	31	306
7	301	32	292
8	298	33	279
9	306	34	276
10	305	35	285
11	270	36	296
12	296	37	275
13	307	38	299
14	284	39	301
15	280	40	294
16	264	41	312
17	299	42	289
18	270	43	278
19	275	44	288
20	276	45	299
21	294	46	270
22	313	47	308
23	304	48	298
24	310	49	294
25	271	50	306

a- What is the appropriate control chart that can be used by the quality engineer in this case?

b- Determine the control limits (show your calculations)

c- Construct the appropriate control chart for the data above using MINITAB.

d- Is the process in-control? If not, when does the out-of-control behavior occur?

e- If the process is found to be out of control, drop the out-of-control points and use MINITAB to re-construct the control chart.

f- Is the process now in-control? If not, what to do next?

Reference no: EM13537603

Questions Cloud

Explain what is the percentage yield : When NH3 is prepared from 28 g N2 and excess H2, the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30. g is produced. What is the percentage yield

Explain the frequency of radiation it uses to communicate : Many people have 900 MHz phones where this refers to the frequency of radiation it uses to communicate. What energy does this correspond to (in joules/photon)

Single valence electron of a rubidium atom : The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..

Equation relating energy levels of the harmonic oscillator : A lithium atom, mass 1.17 x 10-26 kg, is vibrating with simple harmonic motion in a crystal lattice, where the force constant is 71.0 N/m. Write the equation relating the energy levels of the harmonic oscillator to the quantities given.

When does the out-of-control behavior occur : What is the appropriate control chart that can be used by the quality engineer and determine the control limits (show your calculations)

Construct the appropriate control chart : What is the appropriate control chart that can be used by the quality engineer in this case, determine the control limits and construct the appropriate control chart for the data above using MINITAB.

Explain solution is cloudy after precipitation and heating : If the solution is cloudy after precipitation and heating, what does this indicate. Can the solution be filtered at this point

Determine the centerline and control limits : Determine the centerline, determine the control limits, Use MINITAB to develop the appropriate control chart and are there any indications of lack of control

Evaluate the agno3 needed to precipitate : If a 400 mg sample is assumed to be pure NaCl, calculate the millimeters of 0.1M AgNo3 needed to precipitate it completely

User Account

All Pages