Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3). (i) How many dummy variables are required to represent the categorical variable?  (ii) Write a multiple regression equation relating x1, and the categorical variable to y.

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A: From the above data  We are given that the  if the information given is the number of courses taken…

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A: Where is the  Potential outlier ?

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A: An outlier is a data point that Select the correct choice

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A: Given data is 19,16,10,12,15,13,9,11,17,15,18,20

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A: Given that

Q: An article in the Tappi Journal (March, 1986) presented data on green liquor Na2S concentration (in…

A:

Q: For a set of data, μ = 71, X=35, z = -0.60. What is the standard deviation of the population?

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A: Here want to know given example is.

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Q: random sample of 75 eighth-grade students score's on a national mathematics assessment  test has a…

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