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Post an example of a practical application of regression analysis. Identify the independent and dependent variables and explain how regression analysis was used to predict the value of the dependent variable. Please provide details such as the statistical significance and coefficients of correlation and determination. This may either be an example from the media or one that you come up with; if you use a media example, please post a working link.
A random sample of size n from a normal population with σ2 = 1 is to be used to test the null hypothesis μ = μ0against the alternative hypothesis μ = μ1, where μ1 > μ0. Use the Ney man-Pearson lemma to find the most powerful critical region of size α..
Explain how we test independent against dependent variables in a regression analysis? What's the set up? How are regression analyses often misused / misinterpreted at work or in the news? Cite an example.
in a study of pregnant women and their ability to correctly predict the sex of their baby 58 of the pregnant women had
Identify and analyze a research question that applies to your organization. Prepare a 350- to 700-word milestone. Choose an organization with which your team is familiar.
Assuming that the manager's claim is correct, calculate the probability that 117 or fewer of 205 randomly selected marketing researchers would disapprove of the scenario.
suppose that two random variables x and y have a joint density function given by fxy and by checking we find that fxy
giving a test to a group of students the grades and gender are summarized
The accompanying data on cortisol level was reported in the article "Cortisol, Cortisone, and 11-Deoxycortisol Levels in Human Umbilical and Maternal Plasma in Relation to the Onset of Labor" (J. of Obstetric Gynaecology of the British Commonwealt..
What type of error would result in that case? Respond to at least two of your classmate's postings.
Assuming for a moment that 35% of all Ralph's customers have a discount card, what is the probability of getting a sample proportion at least this big?
according to experian the population of consumer credit card holders carries an average credit card balance of 5500
use this calculation table for the chi-square test for goodness-of-fit to complete this
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