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Think about a real-world situation or problem that could be addressed using a one-way analysis of variance. For this situation or problem, clearly state the independent and dependent variables you would study; generate the statistical null and alternative hypotheses; describe what information the effect size would tell you that the probability value would not tell you; explain what additional information confidence intervals around mean would give your reader; explain when would you need to report a post hoc test and why; and using realistic numbers for values of degrees of freedom, sample size, F-ratio, confidence interval and post hoc results; report hypothetical results in a few sentences using APA format.
The medical school at a university, if 10 medical students are randomly selected for that school. find the probability that only 4 of them will graduate.
A study of long-distance phone calls made from the corporate offices of General Electric revealed the length of the calls, in minutes, follows the normal probability distribution. The mean length of time per call was 5.2 minutes and the standard ..
Conduct all steps of the hypothesis test. Remember to include hypotheses, test statistic, decision, and conclusion.
The largest value in a set of data is 160, and the smallest value is 70. If the resulting frequency distribution is to have six classes of equal width, what will be the class interval?
Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A 2 sample t-test test is run based on your data and a p-value is calculated to be 0.0219. What is the approp..
Describe to a person who has never taken a course in statistics the meaning of a grouped frequency table.
What is the probability that none of three randomly chosen persons areallergic to this drug . what is the probability that at least one person is allergic to this drug.
You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
An attempt was made to evaluate the inflation rate as a predictor of the spot rate in the German treasury bill market. For a sample of 29 quarterly observations the estimated linear regression
Analyse sample variances in order to find which test would likely be most appropriate to employ to test the equality of the population means, pooled or unpooled?
A researcher is studying IQ levels. From past experience she knows the population mean IQ for adults is 110 and the standard deviation is 15.
Find the probability that out of our batch of 100, with the sampling technique listed above, that (i) both toothbrushes are defective, (ii) that one of the two is defective.
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