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1. There are 17 people at a party. Explain what the probability is that any two of them share the same birthday. [Show your work]
2. A cold and flu study is looking at how two different medications work on sore throats and fever: [Show your work]
• Sore throat - Medication A: Success rate - 90% (101 out of 112 trials were successful)
• Sore throat - Medication B: Success rate - 83% (252 out of 305 trials were successful)
• Fever - Medication A: Success rate - 71% (205 out of 288 trials were successful)
• Fever - Medication B: Success rate - 68% (65 out of 95 trials were successful)
Analyze the data and explain which one would be the better medication for both a sore throat and a fever.
3. The United States employed a statistician to examine damaged planes returning from bombing missions over Germany in World War II. He found that the number of returned planes that had damage to the fuselage was far greater than those that had damage to the engines. His recommendation was to enhance the reinforcement of the engines rather than the fuselages. If damage to the fuselage was far more common, explain why he made this recommendation.
hypothesis test for one sample meana survey of 50 clientsin january 08 fifty clients of a county mental health mental
1. Using the hardness data from the odor data set odor .txt, do the following. (a) Make a normal probability plot of the data. (b) Do the data appear to be normally distributed? Explain.
question an er nurse notices that when she and her colleagues are asked to work overtime they seem to get less sleep
Use a significance level of alpha = .05 to test the claim that p > .5. The sample is a simple random sample n = 50. Show how to calculate beta for the test and assume the true population proportion is .6.
A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25. The upper limit of a 95% confidence interval for the population mean would equal?
what is the appropriate procedure to test for significant difference in means between two groups? Implement the procedure using the critical-value method and what is the p-value?
Select a method for graphically representing the provided date Use the method to create a graph analyze the date and provide a narrative description of my analysis.
there are 150 books in a professors office. you take a random sample of 8 of these books and count the number of pages
How many cities have a population of at least 100,000 but less than 1,000,000? What percentage of cities are in this group?
the average flight from point a to point b takes 50 minutes with a standard deviation of 5 minutes. what is the
White blood cell counts for a group of volunteers before being innoculated, and white blood cell counts for a second group of volunteers after being innoculated.
Market researchers use it by correlating product attribute ratings with a dependent measure such as overall satisfaction. They then rank the product attributes to determine which attributes are the most important. They call this Key Driver Analysi..
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