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A payoff table is given as State of Nature Decision Low Medium High d1 10 8 6 d2 14 15 2 d3 7 8 9 The probabilities of s1, s2, and s3 are .2, .4, and .4, respectively. A) what are the expected values for each alternative? B) What decision should be made under expected value? C) What is the EVPI?
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
Identify a research issue, problem, or opportunity that uses data that has absolute zero measurements, ratio level data.
The important thing is having a reason for picking the model that you decide on. You should choose a model for overall characteristics like a high R^2 value. Y
Are the findings statistically significant? Why or why not? Describe the process you used to make this determination and provide the level of significance.
Distribution of Sample Means
A population with u=73 and o=9 is transformed into a new population with u=10 and o=2. What is the new value for each of the following scores in the population?
Ran parts and found 1% defective(1 out of 100). Made a change to the process and want to rerun parts. How many parts do we need to check (and find 0% defective) for a 90% confidence factor
Quality Control A quality inspector checked for imperfections in rolls of fabric for one week. The random variable x represents the number of imperfections found.
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use Excel to find the..
A recent poll of 700 people who work indoors found that 278 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a sample is necessary?
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
State the null hypothesis and the alternate hypothesis. State the decision rule. Compute the value of the test statistic. What is your decision regarding the null hypothesis?
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