Q2/ During the past 21 days, 100 samples of a typeof electrical appliance are tested daily, and it isfound that the total number of unacceptable samplesis 546. Among the four p-values, the smallestvalues and the largest values are as in thetable below:LARGEST SMALLEST0.460.330.310.310.180.180.200.21A- Calculate the control limits in the Chart (p),and are Production under control? B- If theprocess is not under control, then correct it.

This question is about calculating the control limit in a control chart (p) and determining if the…

Answered: Q2/ During the past 21 days, 100…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A paint company has large outlet stores in two cities. Ten samples of the weekly sales (in tons) for the two cities are as follows. City A: n = 10, X10 = 148.5, S1 = = 4.3. City B: n = 10, Y 10 = 144.2, S2 = 3.8. At a = 0.05 level of significance, test if the weekly sales are different. The following ¨answers" have been proposed. (a) The null hypothesis is that the weekly sales are the same and the alternative is that the they are not the same. By using an F test, we reject the null hypothesis. (b) The null hypothesis is that the weekly sales are the same and the alternative is that the they are not the same. By using an F test, we do not reject the null hypothesis. (c) The null hypothesis is that the weekly sales are the same and the alternative is that the they are not the same. By using a i test, we do not reject the null hypothesis. (d) The null hypothesis is that the weekly sales are the same and the alternative is that the they are not the same. By using a i test, we reject the…
Kelly Paints has decided to use a c-Chart to monitor the number of defects per jeep produced by their painting process. The c-Chart should be constructed with 3-sigma control limits. The operations manager randomly samples one jeep at 8 successively selected time periods and counts the number of defects on the jeep. Answer How to enter your answer (opens Step 1 of 7: What is the Center Line of the control chart? Round your answer to three decimal places. Table Control Chart Sample 1 2 3 4 LO Select the Copy Table button to copy all values. To select an entire rc or column, either click on the row or column header or use the Shift and arrow keys. To find the average of the selected cells, select the Average Values button. 5 6 7 8 Copy Table Copy Table Average Values The average of the selected cell(s) is 10.000. Copy Value Defects 10 13 12 14 11 14 6 9
5
Samples were collected from two ponds in the Bahamas to compare salinity values (in parts per thousand). Several samples were drawn at each site. Pond 1: 37.03, 37.45, 36.75, 37.54, 37.71, 37.02, 37.32 Pond 2: 38.89, 39.05, 38.51, 38.53, 38.71 Use a 2% significance level to test the claim that the two ponds have the same mean salinity value. Assume that nothing is known about the population distribution of salinities. (a) Enter the rank values in the same order as in the original sample. The rank values for Pond 1 are: The rank values for Pond 2 are: (b) The test statistic is: . (c) The test critical value is: . (d) The conclusion isA. There is not sufficient evidence to indicate that the two ponds have different distributions of salinity values.B. There is sufficient evidence to indicate that the two ponds have different distributions of salinity values.
A local steel pipe manufacturing company makes pipes . In a quality control assessment , a total of five ( 05) samples are collected with four ( 04 ) observations within each sample . The sample means ( X - bar ) are ; 14.09 , 13.94 , 16.86, 18.77 16.64 respectively . Next , the corresponding ranges are ;9.90,7.73, 7.89,7.56 , and 5.50 respectively . The lower and upper control limits of the R - chart are —————respectively . 1) None is correct 2)10.5,1 . 3) 17.59,0 0,17.32 . 4) 0,16.68
Using the appropriate control chart, determine two-sigma control limits for each case: (step-by-step solution) An inspector found an average of 3.9 scratches in the exterior paint of each of the automobiles being prepared for shipment to dealers. Before shipping lawn mowers to dealers, an inspector attempts to start each mower and notes any that do not start on the first try. The lot size is 100 mowers, and an average of 4 did not start (4 percent).
William Industries has decided to use a p-Chart with 3-sigma control limits to monitor the proportion of defective bolts produced by their production process. The operations manager randomly samples 250 bolts at 14 successively selected time periods and counts the number of defective bolts in the sample. Table Step 3 of 8: What is the Upper Control Limit? Round your answer to three decimal places. Answer How to enter your answer (oper Control Chart and arrow keys. 10 Tina the average or the selected cells, select the Average values Dutton. Copy Table Average Values The average of the selected cell(s) is 12.000. Copy Value Sample Defects 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12 13 13 14 12 8 7 11 7 10 9 12 13 10 Copy Tab C
1. For the two following exercises, identify: the population, the parameter and the variable, a) A fitness center is interested in the mean amount of time a client exercises in the center each week. b) A cardiologist is interested in the mean recovery period of her patients who have had heart attack
4. 0 There is some indication that as countries' levels of literacy increases, authoritarian tendencies decline among the population. The following data show literacy (measured in number of literate people per 10 people) and authoritarian scores on a standard authoritarinaism- measuring scale from 8 countries. The data are: Xiiteracy : 9.2, 7.5, 8.8, 6.5, 4.3, 5.9, 9.7, 8.5 XAuth: 2.1, 3.4, 2.5, 7.3, 8.9, 5.7, 1.3, 2.5 Is there a reliable relationship between the two variables? If yes, what would the predicted authoritarian score of a country where only quarter of the country is literate? What about for a country where the literacy rate is %100? Use alpha = .05.
The recommended hours of sleep per night for adults is 8 hours. A doctor, who works at a sleep study facility, believes average number of hours of sleep per night for adults is more than the recommended 8 hours. To test this claim, at th significance level, the doctor collects the following data on a sample of 25 adults at the sleep study facility and records amount of sleep. The following is the data from this study: Sample size = 25 adults Sample mean = 8.5 hours Sample standard deviation = 0.9 hours Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=#, t represent the correct hypothesis.) Provide your answer below:

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