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Suppose that A and B are two events such that P(A) 0.4, P(A?B) = 0.8, and P(A?B) = 0.2. Let C denote the event that exactly one of A and B occurs. What is P(C)?
What are the F critical values for A effect, B effect, and the interaction - Which effects are significant? Write the results statistical
q1. with random sampling there is homogeneity within a subgroup or stratum.a. judgmental b. simple c. clusterd.
Based on anthropological reports in which the status of women is scored on a 10-point scale, the mean and standard deviation across many cultures are known. A new culture is found in which there is an unusual family arrangement.
let x1 x2...xn be independent and no1 distributed. let sn x21...x2n. show that sn is a random variable x2-distributed
Let X have possible values {1, 2, 3, 4, 5} and probability mass function:
What is the difference between a parameter and a statistic? Describe an example. Finally, there are "adjustments" that statisticians make to statistics
Explain the concepts of reliability and validity and how they are assessed. Explain basic descriptive and inferential statistics.
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
Illustrate how critical values associate to the confidence interval using example variable. Explain how margin of error associates to confidence intervals and to ecology.
A sample of patients for one busy primary care practice is used as the comparison group. What is the research design and its variables?
in the last quarter of 2007 a group of 64 mutual funds had a mean return of 1.2 with a standard deviation of 6.5.
ShopperTrak is a hidden electric eye designed to count the number of shoppers entering a store. When two shoppers enter a store together, one walking in front.
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