The weight of plastic pellets for an injection molding process is normally distributed. A random sample of 25pellets is selected and gives the following weights (in grams):15131816181616131112171212221214111913121210141614Based on the sample data:(A) The sample average =A two-sided 95% natural tolerance limits that contain at least 90% of the population are:(B) Lower tolerance limit=(C) Upper tolerance limit=

The provided information is as follows:The sample size is .The length of the confidence interval is…

Answered: The weight of plastic pellets for an…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

An automatic lathe produces rollers for roller bearings, and statistical process control charts are used to monitor the process. The central line of the chart for the sample means is set at 8.50 and for the range at 0.31 mm. The process is in control, as established by samples of size 5. The upper and lower specifications for the diameter of the rollers are 18.50 + 0.252 and 18.50 - 0.252 mm, respectively. a. Calculate the control limits for the mean and range charts. b. If the standard deviation of the process distribution is estimated to be 0.13 mm, is the process capable of meeting specifications? Assume four-sigma performance is desired. c. If the process is not capable, what percent of the output will fall outside the specification limits? (Hint: Use the normal distribution.)
Concrete blocks to be used in a certain application are supposed to have a mean compressive strength of 1500 MPa. Samples of size 1 are used for quality control. The compressive strengths of the last 40 samples are given in the following table. Sample Strength 1487 1463 3 1499 1502 1473 1520 1520 1495 1503 10 1499 11 1497 12 1516 13 1489 14 1545 15 1498 16 1503 17 1522 18 1502 1499 1484 19 20 21 1507 22 1474 23 1515 1533 1487 1518 24 25 26 27 1526 28 1469 29 1472 30 1512 1483 1505 31 32 33 1507 34 1505 1517 1504 35 36 37 1515 38 1467 39 1491 40 1488 Previous results suggest that a value of o = 15 is reasonable for this process. a. Using the value 1500 for the target mean u,and the values k = 0.5 and h = 4, construct a CUSUM chart. b. Is the process mean in control? If not, when is it first detected to be out of control?
Fertilizer bags are weighed as they come off a production line. The weights are normally distributed and the coefficient of variation is 0.085%. It is found that 2% of the bags weigh less than 50.00 kg. a) What is the average weight of a bag of fertilizer? b) What percentage of the bags weigh more than 50.0kg? c) What is the upper quartile of the weights?
Find the standard error of the distribution of sample proportions for samples of size 30 from a population with proportion 0.75. SE =
Twenty-five samples, each of size 5, were selected from a process that was in control. Thesum of all the data collected was 677.5 pounds.a. what is an estimate of the process mean (in terms of pounds per unit) when theprocess is in control?
Use the data in Table 7.6 and pool the data across the treatments into one sample of size n = 250. Use the pooled data to test whether the distribution of the percentage of wound healing is approximately normal. Specifically, use the following distribution as the comparator: 30%, 40%, 20%, and 10%. Run the appropriate test at α = 0.05. PLEASE SHOW THE ANSWER IN EXCEL FORMAT WITH FORMULAS.
A metal part's tensile strength is normally distributed with a mean of 39 Ib and standard deviation 5 Ib. If 48192 parts are produced, how many would have a tensile strength of more than 46 Ib? Select one: a. 3892 b. 0.0808 c. 3986 d. 3782 e. 0.0844
The compressive strength of concrete is normally distributed with mean 140 psi and variance 106 psi. A random sample of 54 specimens is collected. What is the standard error of the sample mean? a.)0.191 b.)1.321 c.)1.401 d.)1.744 e.)1.963 f.)14.425
The Mean inside the diameter of a sample of 500 washers produced by a machine is 5.02 mm.and the S.D. is 0.05 mm. The purpose for which three washers are intended allows a maximum tolerence in the diameter of 4.96 to 5.08 mm, otherwise the washers are considered defective. Determine the percentage of defective washers produced by the machines, assuming the diameters are normally distributed.
Determine the point of estimate of the population mean and margin of error from the given information: Lower Bound: 5 Upper Bound: 23 Question 4 options: x¯= 15 E = 10 x¯= 12 E = 9 x¯= 13.5 E = 9 x¯= 14 E = 9
The accompanying data are the weights (kg) of poplar trees that were obtained from trees planted in a rich and moist region. The trees were given different treatments identified in the accompanying table. Also shown are partial results from using the Bonferroni test with the sample data. No treatment Fertilizer Irrigation Fertilizer and Irrigation 1.26 1.02 0.09 0.81 0.47 .86 .52 1.71 0.45 0.55 0.06 1.45 0.14 0.67 0.79 2.37 1.33 0.97 0.76 1.66 (I) TREATMENT (J) TREATMENT Difference (I-J) Std. Error Sig. 1.00 2.00 −0.0840 0.28375 1.000 3.00 0.2860 0.28375 1.000 4.00 −0.8720 0.28375 0.037 1. Use a 0.10 significance level to test the claim that the different treatments result in the same mean weight. a. Determine the null and alternative hypotheses. Find the test statistic. ______ (Round to two decimal places as needed.) Find the…
Consider samples of size 3 without replacement. Use the following table of sample means to find the mean, μx, of the variable, x

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS