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Consider this joint probability distribution P:
P(x1; y1; z1) = 0:03P(x1; y1; z2) = 0:27P(x1; y2; z1) = 0:04P(x1; y2; z2) = 0:16P(x2; y1; z1) = 0:09P(x2; y1; z2) = 0:21P(x2; y2; z1) = 0:08P(x2; y2; z2) = 0:12
(a) Determine whether P constitutes a Bayesian network with the DAG X -> Y -> Z:(b) Determine whether P constitutes a Bayesian network with the DAG X -> Z <- Y:
A manufacturer of dodge balls uses a machine to inflate its new balls to a pressure of 13.5 pounds (σ =0.1). When the machine is properly calibrated, the mean inflation pressure s 13.50 pounds, but uncontrollable factors can cause the pressure of ..
What information is provided by the sign (= or -) of the Pearson correlation? What information is provided by numerical value of the Pearson correlation?
47% of students have children under 17 living at home with them. Find the probability that a random sample of 800 students will return more than 50% students with children under 17 living at home with them.
A national survey of restaurant employees found that 75% said work stress had a negative impact on their personal lives. A sample of 100 employees from a popular restaurant chain finds that 68 answer
To test whether there is significant mean difference between two groups using independent sample t test.
Choose a business problem that is based upon an experience from your place of work or home environment. Briefly describe the business problem and the research methodology that you would employ to gather data and test your hypothesis
Scores on an endurance test for cardiac patients are normally distributed with mean = 182 and standard deviation = 24.
Laura wanted to build a multiple regression model based on advertising expenditures and coffee times price index. Based on the selection of all normal values she obtained the following:
Mr.Smith works on a temporary basis. The mean length of each job he gets is three months. If the amount of time he spends between jobs is exponentially distributed with distributed with mean 2, then at what rate does Mr. Smith get new job?
Find the probability that the toll collector will have to wait longer than 26.30 minutes before collecting the 8th toll.
Also, 77 percent of managers have MBA degrees. Using probability formulas, determine proportion of employees who either have MBAs or are managers.
What is the value of the slope of the least squares regression line for these data? Round your answer to at least four decimal places.
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