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Question: Find an example of a randomized experiment in the news. Answer the following questions about it. Be sure to include the news article with your response.
a. What are the explanatory and response variables? What relationship was found, if any?
b. What treatments were assigned? Was a control group or placebo used?
c. Was the study a matched-pair design, a block design, or neither? Explain.
d. Was the study single-blind, double-blind, or neither? Explain.
In the comparison of two kinds of paint, a consumer testing service finds that four 1-gallon cans of one brand cover on the average 546 square feet with a standard deviation of 31 square feet, whereas four 1-gallon cans of another brand cover on t..
You will be required to provide an historical geography narrative on the following broad theme:
What are the relevant hypotheses? Perform an appropriate parametric statistical procedure to test these hypotheses and briefly explain your results (a level = 0.05).
consider a normal population with mu25 and sigma8.0.a. calculate the standard score for a value x of 23b. calculate the
Assume we have a population of scores with mean (mu) of 200 and standard deviation (sigma) of 10. Assume that the distribution is normal. Provide answers to the following questions:
In 2007, the combined scores of the millions of college-bound seniors taking the SATs were approximately Normal with mean 1017 and standard deviation.
Discuss different ways to plot the data. Choose one way to make a plot and give reasons for your choice.- Make the plot and describe what it shows.
James wrote, "The greatest discovery of my generation is that a human being can alter his life by altering his attitudes." Explain why you agree or disagree and give an example from your own experience.
In a population distribution, a score of X =28 cor- responds to z = 21.00 and a score of X =34 cor- responds to z = 20.50. Find the mean and standard deviation for the population.
The populations must all be normally distributed, what is meant by normally distributed?
Suppose you play the venerable game rock-paper-scissors. If you pick paper and your opponent chooses arbitrarily, what is the probability that you will win?
imagine that there are 100 different researchers each studying the sleeping habits of college freshmen. each researcher
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