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Let X1, ..., Xn be i.i.d. from the N(θ, θ2) distribution, where θ > 0 is a parameter. Find a minimal sufficient statistic for θ and show whether it is complete.
in an experiment to assess the strength of the hunger drive in rats 30 previously trained animals were deprived of food
in a study of redgreen color blindness 950 men and 2000 women are randomly selected and tested. among the men 83 have
A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
A bowl contains 20 chips, of which 9 are red, 8 are white and 3 are blue. Six chips are taken at random and without replacement. Find the probability that each of the 6 chips is red.
Your client purchased 300 shares of Speedy Airlines common stock at $27.86 a share in July of 2015. In June of 2016 the client writes 2 October 35 calls.
Assume that pM is the true underlying proportion of men who favor the issue and that pW is the true underlying proportion of women who favor of the issue. If it actually is true that pW = pM = p, find the MLE of the common proportion p.
Teen smoking. The Centers for Disease Control say that about 30% of high-school students smoke tobacco (down from a high of 38% in 1997).
How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion and find the 99% confidence interval of the population proportion of persons living in Phoenix who are obese.
a large manufacturing firm tests job applicants who recently graduated from college. the test scores are normally
Each fall, auditions for the band and orchestra are held at a large university. Last fall, the numbers of males and females in each class who auditioned follow.
a simple random sample of 50 items from a population with 6 resulted in a sample mean of 32. provide a 90 confidence
Which of the following studies used a participant observer approach?
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