Results from the last four samples from a process are shown in the table. Calculate control...

Results from the last four samples from a process are shown in the table. Calculate control limits for an R and X chart. Determine whether the process is in statistical control.

Sample number	Observation 1	Observation 2	Observation 3	Observation 4
1	5	5.01	4.9	5
2	5.01	5.02	4.98	5
3	5.02	5.07	4.99	4.98
4	4.9	4.92	5.01	5.23

To control the lead time of a process, samples of size ten are taken from the process. If the average time to complete the process is three days, with a standard deviation of 0.5 days. Calculate the control limits for an X chart at 3 sigma level.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Consider the following contingency table that records the results obtained for four samples of fixed sizes...

Consider the following contingency table that records the results obtained for four samples of fixed sizes selected from four populations. Sample Selected From Population 1 Population 2 Population 3 Population 4 Row 1 38 75 90 79 Row 2 16 56 82 123 Row 3 45 49 78 78 a. Write the null and alternative hypotheses for a test of homogeneity for this table. H0: The proportion in each row is the same/not the same for all four populations. H1:...

Results from a civil servant exam are shown in the table to the right. Is there...

Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.01 significance level. Passed Failed White candidates 15 13 Minority candidates 9 22

Results from a civil servant exam are shown in the table to the right. Is there...

Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.05 significance level. passed failed white candidates 20 15 minority candidates 9 26

Eight samples (m=8) have been collected from a manufacturing process that is in statistical control, and...

Eight samples (m=8) have been collected from a manufacturing process that is in statistical control, and the dimension of interest has been measured for each part. It is desired to determine the values of the center, LCL, and UCL for ?̅ and R charts. The calculated ?̅ values (units are in mm) are 2.723, 1.993, 2.008, 1.723, 1.999, 2.001, 1.995 and 2.723 The calculated R values (mm) are 0.015, 0.021, 0.020, 0.023, 0.723, 0.723, 0.014 and 0.011. Also plot the...

Table below shows the results from a transduction experiment. Calculate the number of transductants that has...

Table below shows the results from a transduction experiment. Calculate the number of transductants that has resulted from this experiment (show your calculations). List 3 reasons for the bacterial growth on the control plates. Culture Transduction Minimal Medium E.coli control 1 5 E.coli control 2 3 E.coli + P-22 plate 1 37 E.coli + P-22 plate 2 41

A study was done on proctored and nonproctored tests. The results are shown in the table....

A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. The test statistic, t, is

Last month, a random sample was taken of the residents of Petland. The results are shown...

Last month, a random sample was taken of the residents of Petland. The results are shown in the table below. Petland is a small country with a population of 5732 people and only two zip codes: 501 for the North and 802 for the South. Person Zip Code Age Number of Cats Anna 501 25 0 Billy 802 41 6 Carmen 802 55 4 Deng 501 60 2 Erica 501 35 3 Fernando 501 39 3 Greta 802 25 2...

1. From the data shown in the table below about demand for smart phones, calculate the...

1. From the data shown in the table below about demand for smart phones, calculate the price elasticity of demand (using the arc method) from: 1.1. Point B to point C 1.2. Point D to point E 1.3. Point G to point H Classify the elasticity at each point as elastic, inelastic or unit elastic. Points P Q A 60 3,000 B 70 2,800 C 80 2,600 D 90 2,400 E 100 2,200 F 110 2,000 G 120 1,800 H...

The table shows the results of a survey in which separate samples of 400 adults each...

The table shows the results of a survey in which separate samples of 400 adults each form the East, South, Midwest, and West were asked if traffic congestion is a serious problem in their community East-36% South-32% Midwest-28% West-57% The 95% confidence interval for the proportion of adults from the South who say traffic congestion is a serious problem____,____ The 95% confidence interval for the proportion of adults from the East who say traffic congestion is a serious problem____,____? The...

The table shows the results of a survey in which separate samples of 400 adults each...

The table shows the results of a survey in which separate samples of 400 adults each from the East, South, Midwest, and West were asked if traffic congestion is a serious problem in their community. Complete parts (a) and (b). A table consists of four rows containing the following information from top to bottom, with row listed first and information listed second; row 1, East 35%; row 2, South 32%; row 3, Midwest 27%; row 4, West 54%.EastSouthMidwestWest35%32%27%54% (a) Construct...

Subjects