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Study Resources (Statistics)

In a simple linear regression, the relationship between the correlation coefficient and the slope coefficient is best described by: Their signs are the same. If the correlation coefficient is positive, the slope coefficient is positive as well. If the correlation coefficient is negative, the slope coefficient is negative as well..
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In a sales effectiveness seminar, a group of sales representatives tried two approaches to selling a customer a new automobile: the aggressive approach and the passive approach. For 1160 customers, the following record was kept: Suppose a customer is selected at random from the 1160 participating customers..
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in a short paragraph, explain the principle of simple linear regression (how is the regression line estimated and how it can be interpreted) to someone without any formal mathematical training; that is, using simple words and no statistical jargon. In a short paragraph, explain whether linear regression is appropriate in.
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In a short essay format, please state which type of mathematical parameter (ratio/proportion/rate) and which type of measure of disease frequency (cumulative incidence/incidence rate/prevalence) best describes each of the following: Percentage of infants enrolled in a day-care center who contracted impetigo during the Course of an epidemic. .
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In a simple linear regression, the relationship between the correlation coefficient and the slope coefficient is best described by: 1. Their signs are the same. If the correlation coefficient is positive, the slope coefficient is positive as well. If the correlation coefficient is negative, the slope coefficient.
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In a sample of adolescents, 257 participants reported wearing glasses, 133 participants reported wearing contact lenses, and 661 participants reported wearing neither glasses nor contact lenses. A chi-square goodness of fit test was performed in order to determine whether there was an even number of participants in each vision category..
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In a simple random sample of 720 patients, 500 patients have positive responses to a new sleeping therapy. Let be the theoretical success rate (proportion) of this new sleeping therapy.   (a)[2] Check if the sampling distribution of the sample proportion has approximate normality. (b)[6] At the level of significance =.
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