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Samples of three materials under consideration for the housing of machinery on a seagoing vessel are tested by means of a salt-spray test. Any sample that leaks when subject to a power spray is considered to have failed. The following are the test results. Use a suitable computer program to test at the 0.05 level of significance if the three materials have the same probability of leaking in this test.
Material A Material B Material C
Number leaked 36 22 18
Number not leaked 63 45 29
westco is a well established company with thousands of employees and they want to estimate the average age of their
If the manufacturer stocks 100 components, what is the probability that the 100 orders can be filled without reordering components?
To avoid losing money, the top 5% (the heaviest 5%) is labeled overweight. A) What proportion of boxes is underweight?
Place the steps below in the correct order for the construction of a control chart.
a distribution center receives shipments of a product from three different factories in the quantities of 60 30 and
Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on less than 3.
Your financial advisor sees this and tells you there is a 100% chance XYZ stock will gain over the 2-month period. Would you continue to use this financial advisor? Explain.
a set of blocks painted three colors is on a table in front of you some in bag 1 and some in bag 2. the colors are blue
The sample mean talk time was 315 minutes with a standard deviation of 24 minutes. Why can we say that the sampling distribution of x is approximately normal?
question 1 a sample of 2000 licensed drivers revealed the following number of speeding violations.number of
Following data on x=weight (in pounds): x 1 33.5, x2 27.3, x3 36.7, x4 30.5 Suppose that one more piece is selected; denote its weight by x5. Find a value of x5 such that X = smaple median.
The measure of forecast accuracy that is not influenced by the measurement scale of the time series data is:
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