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1."Graphs That Enlighten and Graphs That Deceive" which, of course, need not be just statistical in nature. Find a graph of one of the types shown in the chapter (e.g. bar graph) in current news at an online news Web site (e.g. newspaper, TV or radio stations and networks), give the URL of the article, and critique the graph.
2. Why is the median price used to reflect average home prices in most areas, rather than the mean or mode? Should all people have similar houses or is it fair that some houses are much more expensive than others? Why or why not? 3. Construct 3 questions that could be answered using the Binomial Distribution and explain why you know the Binomial Distribution is appropriate to use in each case. 4. 2. Why is there more than one process for the Normal Distribution? Why are extra steps needed if the mean is not zero and the standard deviation is not one? 5. Explain what a confidence interval is and how it helps you to better understand the parameter of the population you are interested in?
Compute the correlation coefficient for the data. (Round your answer to 4 decimal places, the tolerance is +/-0.0001.) What is your interpretation of this value?
in october 2000 the u.s. department of commerce reported the results of a large scale survey on high school
A sample of 50 people found that 32 paid with their own money, 10 paid using insurance, and 8 paid using Medicare. At a = 0.05 is the assumption correct? Use the P-value method. What would be an implication of the results?
What is the mean number of streaked-shelled snails and what is the standard deviation of the number of streaked-shelled snails?
Construct a 90% confidence interval for the proportion of all kernels that would not pop.
Find a 90% confidence interval for the population mean of annual growth (of those trees with an initial size of 2.41-2.60 centimeters).
in a cohort breast cancer study a woman is considered to be exposed if she first gave birth at age 30 or older. in a
To test the null hypothesis that the mean waist size for males under 40 years equals 34 inches versus the hypothesis that the mean differs from 34, the following data were collected: 33, 33, 30, 34, 40, 35, 35, 32, 32, 34, 36, 30 calculate the T-v..
What is the difference between expected value and mean? In other words, what would be difference between the expected value of something, as opposed to the mean of that something? And how do I know when I should be finding the expected value and n..
A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.
A Private firm reports that 8% of the 2 million small businesses who apply for loan each year receive special interest rate (usually higher than market rate) because of high riskiness associated with small business.
If the store orders three copies of the magazine, what is the mean value of the profit? (Profit = Revenue - Cost). If the store orders four copies of the magazine, is it better to order four than three copies of the magazine. Explain.
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