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The production department of NDB Electronics wants to explore the relationship between the number of employees who assemble a subassembly and the number produced. As an experiment, two employees were assigned to assemble the subassemblies. They produced 15 during a one-hour period. Then four employees assembled them. They produced 25 during a one-hour period. The complete set of paired observations follows.
Number of Assemblers : One-Hour Production (units)2 : 154 : 251 : 105 : 403 : 30
The dependent variable is production; that is, it is assumed that the level of production depends upon the number of employees.Draw a scatter diagram.Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.Compute the coefficient of correlation.Evaluate the strength of the relationship by computing the coefficient of determination.
Research on new juvenile delinquents revealed that 38% of them committed another crime. What is the probability that 40 or fewer of the delinquents will commit another crime?
A standard deviation of 10 grams. If we select one box of cereal at random from this population, what is the probability that it will weigh less than 895 grams?
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
A sample of 46 homes in a subdivision revealed that 20 were ranch style (as opposed to colonial, tri-level, or Cape Cod). Construct a 98 percent confidence interval for the true proportion of ranch style homes.
Suppose that January sales for the fourth year turn out to be $295,000. What was your forecast error? If this is a large error, Karen might be puzzled about the difference between your forecast and actual sales value.
Determine whether P constitutes a Bayesian network with the DAG X -> Y -> Z: Determine whether P constitutes a Bayesian network with the DAG X -> Z
Based on the boxplots in part (a), which of the two groups, students or teachers, tends to have watch times that are closer to the true time? explain you choice.
Starting with the initial solution derived by the nw corner method identify the cell w/the best cost improvement index and the quantity that can be transferred to that cell.
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
What percentage of employees at the Bureau process fewer forms than Michael? What percentage of employees at the Bureau process more forms than Michael?
The accompanying table summarizes randomly selected sample data for San Francisco Defendants in burglary cases.
The number who will go to the Ohio State University is a binomial random variable. What is the mean number of seniors going to the Ohio State University?
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