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Title: In a simple linear regression problem including n = 10 observations, which of the following table ... Post by: sosobon on Mar 3, 2018 In a simple linear regression problem including n = 10 observations, which of the following table values would be appropriate for a 95 confidence interval estimation for the average value of y?
a. 2.228 b. 2.262 c. 2.306 d. 1.860 e. 18.60 Q. 2 Which of the following statements is false regarding the residuals in simple linear regression model? a. They sum to 0. b. They have a mean of 0. c. They have a standard deviation of 1. d. None of these. e. All of these. Q. 3 In simple linear regression, the plot of residuals versus fitted values y should: a. be free of any patterns b. appear as a random scatter of points about 0 on the vertical axis c. approximately have the same vertical spread for all values y d. all of these e. none of these Q. 4 In simple linear regression, the plot of residuals versus fitted values 3 can be used to check for: a. normality b. a constant variance independent of x c. independence d. all of these e. none of these Q. 5 In developing a 90 confidence interval for the expected value of y from a simple linear regression problem involving a sample of size 15, the appropriate table value would be 1.761. Indicate whether the statement is true or false Q. 6 The confidence interval estimate of the expected value of y will be wider than the prediction interval for the same given value of x and confidence level. This is because there is more error in estimating a mean value as opposed to predicting an individual value. Indicate whether the statement is true or false Title: In a simple linear regression problem including n = 10 observations, which of the following table ... Post by: ecolleenm on Mar 3, 2018 Content hidden
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