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Question: Quality-control managers work in every type of production environment possible, from producing dictionaries to dowel cutting for boat plugs. The Cincinnati Dowel & Wood Products Co., located in Mount Orab, Ohio, manufactures wood dowels and wood turnings. Four-inch-diameter boat plugs are one of its products. The quality control procedures aimed at maintaining the 4-inch diameter are only valid if the diameters have a normal distribution. The qualitycontrol manager recently obtained the following summary diameters taken from randomly selected boat plugs on the production line:
The boat plug diameters are specified to have a normal distribution with a mean of 4 inches and a standard deviation of 0.10. Determine if the distribution of the 4-inch boat plugs is currently adhering to specification. Use a chi-square goodness-of-fit test and a significance level of 0.05.
for a medical study a researcher wishes to select people in the middle 60 of the populartion based on blood pressure.
Consider a random variable Y, and a constant theta such that (1/theta)Y is distributed exponentially. Derive the lower and upper bounds for a 90% confidence interval for theta (These will be a function of y). Noe that theta=1/lambda where lambda i..
The your LAST NAME. (b) When you use Statcrunch to calculate atire document. IMPORTANT: The name of your Word document MUST begin rections: (a) Enter all your answers into this Word document and submit the an answer'p co y
An urn contains w white chips, b black chips, and r red chips. The chips are drawn out at random, one at a time, with replacement. What is the probability that a white appears before a red?
cronbachs alpha and the split-half reliability coefficient are both instruments to determine the reliability of a
Prove that Y is also Gaussian for any a ≠ 0 . - What values for the constants a and b will lead to the new random variable Y having zero mean and unit variance?
transrail is bidding on a project that it figures will cost 400000 to perform. using a 25 markup it will charge 500000
An arriving customer will not wait if there are at least three others waiting for the tax preparer. What is the probability that the arriving customer will not wait?
question based on comparing the computed chi square with the critical value for chi square which if the following is
Five have a 3/10,000 chance for failure. Four have a 4/10,000 chance for failure. One componet has a 1/100 chance for failur. What is the overall reliability of the product?
in a sample of discharge of suspended solids from a phosphate mine it was noted that the mean daily discharge was 27
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
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