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One of DotCom's products has a width dimensional specification of 1.488 ± .005 inches. The process is in statistical control and the dimension is known to be normally distributed with mean μ=1.491 and standard deviation σ=0.004. The plan is to recenter the process so that the mean equals the target value. Evaluate this plan by comparing the fall out before recentering and after recentering. Fall out is the fraction of products that don't fall within specs.
Draw a sketch of the standard normal distribution curves, one for the current process and another one for the recentered process. Label the spec limits and shade the area of the curve that corresponds to your answer.
Use the method of least squares to model the relationship between x and y.
What is the likelihood all four of the selected flights arrived within 15 minutes of the scheduled time?
Re item 4, assume the critical value for this test is 4.92, and you obtain a computed statistical value of 7.45. Is there evidence to refuse null hypothesis? Describe why or why not?
Find a 95% confidence interval for the mean daily caloric intake. Interpret this interval.
The hypothesis that the samples came from identical populations cannot be rejected, the T value is 16.5 greater that the lower limit.
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
Sketch the distribution of sample means for sample of n = 25 scores from this population.
Using decision tree analysis, decide whether Jay must proceed with his law suit against manufacturer.
Develop the management-research question hierarchy that will help you to develop a specific proposal.
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
Determine the probability that computer will fail within 12 months?
Test hypothesis that average price of gasoline in western states is higher than national average for Continental USA and the District of Columbia, i.e., higher than $3.74.
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