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Mathematics /Statistics

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Mathematics /Statistics

  Discussion: Estimating Models Using Dummy Variables You have h

  Discussion: Estimating Models Using Dummy Variables You have had plenty of opportunity to interpret coefficients for metric variables in regression models. Using and interpreting categorical variables takes just a little bit of extra practice. In this Discussion, you will have the opportunity to practice how to recode categorical variables so they can be used […]

STAT; A one-sided test of the null hypothesis .

1. More on the power for a different alternative. A one-sided test of the null hypothesis μ = 20 versus the alternative μ = 35 has power equal to 0.60. Will the power for the alternative μ = 28 be higher or lower than 0.73?  Explain your answer.2. Where do you buy? Consumers can purchase nonprescription medications at food stores, mass merchandise stores […]

Statistics Discussion

Charts and graphs are used quite often in newspaper articles, magazines, books, and various online articles. There are pros and cons to using these types of visual representations.  Describe one pro and one con for using a graph or chart.  Share an example of a time when this type of visual changed your mind about […]

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