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Refer to given Exercise. Each component has a time to failure that is exponentially distributed, with a mean time to failure of 3000 hours. Find the reliability of the subassembly for 2500 hours of operation. What is the mean time to failure of the subassembly? If it is desired that the subassembly has a mean time to failure of 6600 hours, what would have to be the mean time to failure of the components?
Exercise Four components A, B, C, and D are placed in parallel to make a subassembly in a circuit board. The reliabilities of A, B, C, and D are 0.93, 0.88, 0.95, and 0.92, respectively. Find the reliability of the subassembly.
Assume that a 95% confidence interval estimate of the population mean annual starting salary is required. What is the planning value for the population standard deviation?
the student government association at southwestern state university wanted to demonstrate the relationship between the
Why did greeks astronomers conclude that the heaven were made up of perfect crystalline spheres moving at constant speeds?
Find the premium if the same income is to be paid monthly instead of annually, assuming payments are made (a) at the beginning of each month, (b) at the end of each month.
We can compare two sample means to determine if the samples were obtained from normal populations with the same mean using the "t" distribution.
iq scores of adults are normally distributed with a mean of 100 and a standard deviation of 15. if one adult is
Concrete blocks are to be used in the foundations of several buildings. The specifications state that the minimum arithmetic mean compressive strength of a sample of blocks must be 1,000 pounds per square inch (psi).
the statistical abstract of the united states reports that the mean daily number of shares traded on the nyse in 2002
Consider the following simple regression model for which ∈i ∼ N(0, σ), Write the above model in matrix form. Find the least squares estimates using vectors and matrices
assume that the data has a normal distribution and the number of observations is greater than fifty. find the critical
Considering the sample method used, does the hypothesis test from Part (a) appear to be valid d) Given that the size of the sample is extremely large, can this sample size compensate for a poor method of sampling.
Identify the Explanatory (X) and Response (Y) variable and find Persons Correlation Coefficient and determine if there exists a significant linear relationship.
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