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The problem Find the posterior PV |A= if PV (a tree graphical model) is a the prior knowledge and evidence A = a is observed. If PV is a tree before observing the evidence, then we would like PV PV |A= a to be also represented as a tree. Is this always possible?
To test H0: against the alternative H1: in Q 1.5 above, the degrees of freedom of a suitable t-statistic is: In a study of the effect of oral contraceptives (OCs) on blood pressure, measurements were made on 10 OC users (x) and 14 non-users (y).
Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern.
The length of a particular telemarketing phone call has an exponential distribution with a mean equal to 1.5 minutes. Find the probability that the length of a randomly selected call will be between 30 - 50 minutes and 1 minuter or longer.
A telephone survey utilized a sampling frame of 2000 numbers, and had a response rate of 25%. A question asked respondents if they preferred Brand 1, Brand 2, or Brand 3.
Categorize as simple, random, sample, stratified/systematic sample, cluster/convenience sample. List discharged hotel customers, divide them day their length of stay, and draw simple random samples from each group.
A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true proportion of families who own at least on DVD player.
Your office has just received 128 in insurance claims to be processed in the next few days. What is the probability that half or more of the claims have been padded?
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
Briefly explain how sample size affect outcome of hypothesis test. How does sample size affect measures of effect size?
Tire will last 50000 miles before it comes bald or fails. adjustment is made on any tire that doesn't last 50000. purchase four tires. what is the probability all four tires will last at least 50000 miles.
You have been retained as a consultant to SarParKingsGraUsch. Your job is to determine if this particular overbooking strategy is sound. Use simulation methods to perform your analysis.
A local bank reports that 80 percent of its customers maintain a checking account, 60 percent have a savings account, and 50 percent have both.
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