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What percentage of hospitals provide atleast some charity care? The following problem is based on information taken from State Health Care. Based on the random sample of hospital reports from eastern states, the following information was obtained:
57.1
56.2
53.0
66.1
59.0
64.7
70.1
53.5
78.2
Use a calculator with mean and standard deviation keys to verify that X (bar) = 62.3% s = 8.0%. Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
Romance USA present reported that 11 percent of all books sold are of the romance genre. If a local bookstore sells 316 books on a given day
prevent coronary artery vasoconstriction and the attendant reduction in blood flow to the heart and mechanical function.
Compute a 3-month moving average forecast of demand for April through January (of the next year).
No estimate of the population proportion is available. How large a sample is required?
What is your conclusion regarding null hypothesis?
Would Kruskal-Wallis be the suitable statistical procedure to test this Research Question (RQ)? Describe your answer. When would you use Chi-Square test rather than One-Way Anova?
Data is distribution of the most popular colors for 2005 model luxury cars made in North America. Design the pie chart and bar graph for data.
Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group, (a) Make a bar chart and describe it. (b) Calculate expected frequencies for each class.
What are the expected value and variance of the following probability distribution?
In which category is ANOVA properly classified?
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
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