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1. Tests of hypothesis for two populations. List one test statistic that could be used for comparing two populations with hypothesis testing. Can you think of an example where this could be used?
2. Contrary to major television media popular belief, the United States does much good for the world. For example, the United States Center for Disease Control (CDC) undertakes many humanitarian efforts throughout the world every year. They currently have a program in Central America to try to understand, and eradicate, a parasite that causes blindness in humans that live in the region. The disease is referred to as River Blindness. It has been given this name because the parasites can infect those who are exposed in the river waters. How could hypothesis testing be used to help reach a cure for the disease?
3. Choose one of these test statistic formulas and explain its components. Then explain how the critical value and p-value is determined for your chosen test statistic.
Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.
A probability value of .25 means that an event will occur:
A simple random sample of 50 adults is obtained, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.23 and the sample standard deviation is 0.54. Use a 0.01 significance level to test the claim that ..
Re item 4, assume the critical value for this test is 4.92, and you obtain a computed statistical value of 7.45. Is there evidence to refuse null hypothesis? Describe why or why not?
Which of the following assumptions is not made for the F-test for comparing three or more means?
The mean income of a group of sample observations is $500; the standard deviation is $40. According to Chebyshev's theorem, at least what percent of the incomes will lie between $400 and $600?
Evaluate percentage of households in town with one or more cars; attach standard error to be evaluate. If this is no possible, describe why not.
a) Draw the scatter diagram. Does it appear that x and y are related? If so, how? b) Test to determine whether there is evidence of a linear relationship.
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
Choo Choo Paper Company makes various paper products. One of their products is a 30 mils thick paper. In order to ensure that the thickness of the paper meets the 30 mils specification
At the end of the Halloween Festival the organizers estimated that a family of participants spent in average $50.00 with a standard deviation of $15.00. If 49 participants (49 = size of the sample) are selected randomly, what's the likeihood that ..
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