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Control limits for a meat-packaging process. A meat-packaging company produces 1-pound packages of ground beef by having a machine slice a long circular cylinder of ground beef crosswise as it passes through the machine. The timing between consecutive cuts will alter the weight of each section. given Table gives the weight of three consecutive sections of ground beef taken each hour over two 10-hour days. Past experience indicates that the process mean is 1.028 and the weight varies with σ = 0.024 lb.
(a) Calculate the center line and control limits for an chart.
(b) What are the center line and control limits for an s chart for this process?
(c) Create the and s charts for these 20 consecutive samples.
(d) Does the process appear to be in control? Explain.
A discrete random variable Y takes the value -1, 0 and 1 with probabilities 1/2θ, 1- θ and 1/2θ respectively. Let Y1 and Y2 be two independent random variables, each with the same distribution as Y.
An existing inventory for a test measuring self-esteem indicates thatthe scores have a standard deviation of 10 . A psychologist gavethe self-esteem test to a random sample of 100 indi
What type of test is described below and can you provide the null and alternate hypothesis? Using an old manufacturing process.
Edinburgh City Council is conducting a survey of people who live in the Morningside area of the city. What is the probability that there is someone at home in 11 houses? What is the probability that there will be someone at home in 5 houses
The athletic director claims that the atendance is the same as last year. What is the test value needed to evaluate the claim?
Conduct a test of independence using critical-value approach to determine whether employee health insurance coverage is independent of the size of the company. State the Hypotheses and the conclusion. Use α = .005.
an urn contains 6 green and 4 gold balls. one ball is drawn and replaced before the second ball is drawn. find the
Consider the following sample data: 9.37, 13.04, 11.69, 8.21, 11.18, 10.41, 13.15, 11.51, 13.21, and 7.75. Is it reasonable to assume that this data is a sample from a normal distribution? Is there evidence to support a claim that the mean of the ..
In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:
Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim. In summary, in this problem you are given:
during a national debate on changes to health care a cable news service performs an opinion poll of 500 small-business
When is it valid to use a one-tailed test? What is the advantage of a one-tailed test? Give an example of a null hypothesis that would be tested by a one-tailed test.
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