1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
loris [4]
3 years ago
15

A company manufacturing oil seals wants to establish X and R control charts on the process. There are 25 preliminary samples of

size 5 on the internal diameter of the seal. The summary data (in mm) are as follows:
sigma^25_i = 1 X_t = 1, 253.75, sigma^25_i = 1 R_i = 14.08
(a) Find the control limits that should be used on the X and R control charts. For n = 5, A2 = 0.577, D4 = 2.114, D3 = 0
(b) Assume that the 25 preliminary samples plot in control on both charts. Estimate the process mean and standard deviation.
Mathematics
1 answer:
alisha [4.7K]3 years ago
6 0

Answer:

A ) i) X control chart : upper limit = 50.475, lower limit = 49.825

    ii) R control chart : upper limit =  1.191, lower limit = 0

Step-by-step explanation:

A) Finding the control limits

grand sample mean = 1253.75 / 25 = 50.15

mean range = 14.08 / 25 = 0.5632

Based on  X control CHART

The upper control limit ( UCL ) =

grand sample mean + A2* mean range ) = 50.15 + 0.577(0.5632) = 50.475

The lower control limit (LCL)=

grand sample mean - A2 *  mean range = 50.15 - 0.577(0.5632) = 49.825

Based on  R control charts

The upper limit = D4 * mean range = 2.114 * 0.5632 = 1.191

The lower control limit = D3 * mean range = 0 * 0.5632 = 0  

B) estimate the process mean and standard deviation

estimated process mean = 50.15 = grand sample mean

standard deviation = mean range / d2  = 0.5632 / 2.326 = 0.2421

note d2 is obtained from control table

You might be interested in
Use the information in the table to find the constant rate<br> of change in dollars per hour
Debora [2.8K]

Answer:

It goes up $9 per hour

Step-by-step explanation:

5 0
3 years ago
Hi brainly people, help me please lawl
jeka57 [31]
Bot 2 will click more times in 10 seconds, because when you divide 16 by 2 to get its unit rate it is 8 clicks per second. Times that by 10 and you only get 80, whereas if you divide 30 by 3 the unit rate is 10. At this rate, by 10 seconds it will have clicked 100 times. Bot 2 clicks 20 more times than Bot 1 in 10 seconds.
7 0
3 years ago
The group has a 6 foot long table and a plastic tablecloth for the sale. The tablecloths package states that the tablecloth is 1
Alexxandr [17]
Yes because There are 182.2 cm in 6 feet

6 0
3 years ago
Find the slope of the line graphed below.
lozanna [386]

Answer:

slope is 7/3

Step-by-step explanation:

rise/run

7/3

4 0
3 years ago
Read 2 more answers
PLEASE HELP
stepan [7]

Answer:

to big but i will slove it for u ok so see solution c one is correct

5 0
3 years ago
Read 2 more answers
Other questions:
  • The point (1, 1) is on f(x). After a series of 3 transformations, (1, 1) ha been moved to (2, -7). Write a function g(x) that re
    10·2 answers
  • "The grid shows Figure Q and its image Figure Q’ after a transformation. Which transformation was applied on Figure Q?
    14·1 answer
  • Add. 523.71 + 0.55 = ?
    12·2 answers
  • P equals 42. if the width of a rectangle is 8 inches what is the length of the rectangle
    11·1 answer
  • Which of the objects shown below could be sliced to create a circular cross-section?
    14·2 answers
  • Write an inequality equation equivalent to 3x – 4y = 8?
    14·1 answer
  • The price of cupcakes is $7 more than the price of a cake, which is d dollars.what does the expression d+7 represent?
    14·1 answer
  • This figure represents a platform on a stage. The stage crew needs to paint it black. One gallon of paint will cover 40 square y
    5·1 answer
  • The zigzag crystal vase has height 20 centimeters. The cross sections parallel to the base are always rectangles that are 12 cen
    5·1 answer
  • Read and answer questions
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!