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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.
Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring? Suppose P(X1) = .75 and P(Y2|X1) = .40. What is the joint probability of X1 and Y2?
What kind of study was this?- Is that an appropriate choice for investigating this problem? Explain.- Who were the subjects?- What were the variables?
concepts and applicationsusing the 68-95-99-.7 rule. assume the resting pulse rates for a sample of individuals are
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
In 2013 these scientists counted 175,500 ducks, of which 33,100 were Mallards. Find a point estimate for the proportion of Mallards that were observed during the 2013 winter duck count.
Given the hypothesis Ho: u=400, you conduct a sample of 12 observations and obtain a sample mean of 407 and a sample standard deviation of 6. Using a .01 significance level to test to see if you would reject Ho, what would be the value of your cri..
A survey of Kentucky fire departments was conducted to assess their respiratory protection practices, barriers to program implementation, and medical evaluation programs. A 62% survey response rate was achieved.
A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a ..
a security analyst wishes to construct an index to reflect the changes in the price of five stocks in a certain
We did not study the Bernoulli distribution in any detail in Section 3, because it can be looked upon as a binomial distribution with n = 1. Show that for the Bernoulli distribution, μ'r = θ for r = 1, 2, 3, ..., by
Find the value of N which maximizes the expression in part (b). This value is called the maximum likelihood estimate for the unknown quantity N
an insurance company believes that their policyholders fall into two demographic profiles a and b. the fraction of
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