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7.One conclusion you might reach (hint) after completing the readings for this assignment is that there are no bad designs, only bad design choices (and implementations). State a research question for which a single-group post-test only design can yield relatively unambiguous findings. (Could the research question be: The effect of after school tutorials on student test scores? If not, please use the original research question you chose) 1.What research question(s) does the study address? 2.What is Goldberg's rationale for the study? Was the study designed to contribute to theory? Do the results of the study contribute to theory? For both questions: If so, how? If not, why not? 3.What constructs does the study address? How are they operationalized? 4.What are the independent and dependent variables in the study? 5.Name the type of design the researchers used. 6.What internal and external validity threats did the researchers address in their design? How did they address them? Are there threats they did not address? If so how does the failure to address the threats affect the researchers' interpretations of their findings? Are Goldberg's conclusions convincing? Why or why not?
1. Hydrology is the scientific study of the movement, distribution, and quality of water. Hydrologists have shown that the distribution of long duration (e.g. monthly or yearly totals) of such things as river discharge or rainfall is often app..
Identify the part of setting up a simulation in Excel that you find to be the most challenging, and explain why. Identify resources that can help you with that.
Find a peer-reviewed journal article that employs the Pearson's correlation coefficient
a chemical company wished to study the consistency of the strength of one of its liquid chemical products. the product
1. for commercial flights in 2009 approximately 90 arrived on time within 15 minutes of scheduled arrival time.
In a manufacturing process a random sample of 16 bolts manufactured has a mean length of 8 inches with a standard deviation of 1.6 inches. What is the 99% confidence interval for the true mean length of the bolt
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Critical Thinking
a. What is the probability that sales will be less than 80,000 packages?
Give the 95% confidence interval.
Given a normally distributed variable (x), if you know that for a value of x = 244 the z-score = 2.20, what is the probability of any x value being above 244?
Prepare a Scilab script to evaluate the volumetric flux of smoke in a plume produced by a fire of given HRR Q' The plume loses α percent of its heat by radiation and β percent by other means.
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