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A treatment is administered to a sample selected from a population with a mean of mue = 80 and a standard deviation of 10. After treatment, the effect size is measured by computing Cohen's d, and a value of d = 0.60 is obtained. Based on this information the mean for the treated sample is M =?
.a. 6
b. 60
c. 86
d. cannot be determined without additional information
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
Following are different algebraic expressions of the production function. Decide whether each one has constant, increasing, or decreasing returns to scale.
Provide at least 1 example of how a real company has used each of the following multivariate techniques: factor analysis, multi-dimensional scaling, and cluster analysis.
1.For a sample size of 100 determine the crtitical value for a two-tail hypothesis test at a 5% level of significance when the population standard deviation is unknown
Based on your answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
A sample of 420 families revealed the following. At the 0.05 significance level, is there a difference in the proportion of customers that prefer each day of the week?
State your hypothesis, draw your curves, label your critical values and your test statistic, state your decision to accept or reject and write your conclusion in the language of the problem. Use a=0.05.
Discuss whether this variable should be placed in the model as an ordinary quantitative variable or by means of four 0, 1 indicator variables.
An electronic company is about to launch a new product.if the serial number for each piece produced has the following format:LLNNN where L stands for any letter in English and N is a number from 0 to 9,what is the name of the counting rules used t..
in the 2012 us census the four most populous states ca tx ny fl had 12.1 8.1 6.3 and 6.1 of the total us population.
Normal distribution of 5 pounds per square inch, standard deviation of 1.5 pounds per square inch, what proportion have less that 3.17 pounds per square inch, at least 3.6 pounds, are between 5 and 5.5 and 95% will be contained between what two va..
In an evaluation of the medical lab, the manager is interested in the efficiency of three technicians when they process four routine blood tests.
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