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Problem 1. Calculate the sample size needed given these factors: one-tailed t-test with two independent groups of equal sizesmall effect size (see Piasta, S.B., & Justice, L.M., 2010)alpha =.05beta = .2Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample.Problem 2. Calculate the sample size needed given these factors:ANOVA (fixed effects, omnibus, one-way)small effect sizealpha =.05beta = .23 groupsAssume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size. Give your rationale for your selected beta/alpha ratio. Indicate the resulting alpha and beta. Give an argument that your study is worth doing with the smaller sample.Problem 3.In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size you'll need. Give reasons for any parameters you need to specify for G*Power.
What concepts and constructs would you use to study this phenomenon? How might the concepts or constructs relate to explanatory hypotheses? Explain.
a factory produces computer chips and the proportion of defective chips is 0.01 i.e. p0.01.suppose you take a sample
Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992�2003 only. Would a fitted trend be helpful in making a predictio..
explain why increasing the sample size tends to result in a smaller sampling error when a sample mean is used to
the incidence of a certain disease in the population is estimated to be 1.5 . that is the probability that a randomly
the number of christmas trees sold by a shop during the month of december is a discrete uniform random variable having
The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.
30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
Random sample of five North American adult is more than 7 hours a day? What is the probability that in random sample of 5 north American adults, all watch television more than 7 hours a day?
what conditions must be met before constructing a confidence interval for a proportion? be sure to be specific with
This question is asking for speculation about the possible results of a study if we change the size of the population. It all depends on unknowns such as how representative the 100 adults are of the population.
the salinity in the ocean is expressed in parts per thousand ppt. during november 2008 the mean salinity in a region of
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