Upon leaving an assembly area, production items are examined and some of them are found to be in need of either further work or total scrapping. Tags on a sample of 150 items that failed final inspection show both the recommended action and the identity of the inspector who examined the item. The summary information for the sample is shown below. At the 0.10 level, is the recommended action independent of the inspector? Based on the chi-square table, what is the most accurate statement that can be made about the p-value for the test?
Answer to relevant QuestionsCollecting data for eight games, a basketball coach has compiled the following contingency table for the quarter of the game versus the result of “one-and one” free-throw attempts in which a second shot can be attempted ...For three independent samples, each with n = 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same. A random sample of 30 observations has been drawn from a normal population, and the sample variance is found to be s2 = 23.8. Determine the 95% confidence interval for σ2. A random sample of n = 12 is drawn from a population that is normally distributed, and the sample variance is s2 = 19.3. Use α = 0.025 in testing H0: σ2 ≤ 9.4 versus H1: σ2. 9.4. According to the Bureau of the Census, the U.S. population includes 37.7 million persons who were born in Europe, Asia, the Caribbean, Central America, South America, or in another area outside the United States. A ...
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