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Assume that respondents had been asked for party affiliation in a poll. THe responses were coded as 0 (for democra), 1 (for republican), 2 (for independent), or 3 (for any other response). If we calculate the average(mean) of the numbers, how can that value be interpreted?
Commonwealth Edison wants to identify its heaviest users, which are those that are in the top 6% of electric consumption. How many kilowatt hours in January would qualify for the heavy user classification?
Which of the following statements is true regarding a nonparametric test? We assume that the data has been chosen from a normally distributed population
Determine the average score for ERAU graduates? Determine the value of test statistic? Significance level?
What is the probability that at most five cases of E. coli per 100,000 are reported in California this year?
Determine which groups differ in average shelf life. Give test statistic, hypothesis, decision rule and hypothesis
Do the data from this sample provide evidence for a significant increase in REM activity during exams? Use a one-tailed test with _ = .01. B.) Compute Cohen's d to estimate the size of the effect.
How to do multiple regression using Excel and the Megastat plugin. Students are given step-by-step instructions on how to use the MegaStat plugin for Excel and told why Excel's Data Analysis Toolpak isn't reliable for rigorous statistical analysis..
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
Descriptive statistic results from quarterly sales figures over a 18 year period (73 qtr) are below. Please interpret the standard Deviation and Median in terms of sales results,
The trial failed to show significance. How many subjects would be required to detect the difference in proportions observed in the trial with 80% power?
Statistical Hypothesis testing - Frequency distribution
Criterion of realism or Hurwitz. Assume that the payoff from an investment depends on market conditions. Illustrate what is the criterion of realism value.
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