Yadira M
This page lists questions and answers that were posted by visitors named Yadira M.
Questions
The following questions were asked by visitors named Yadira M.
An appliance repair shop owner has fitted the quadratic trend equation ŷ = 90 + 0.9x + 3x² to a time series of annual repair orders, with y= the number of repair orders and x= 1 for 2000. Forecast the number of repair orders for 2008; for 2010
16 years ago
For the multiple regression equation ŷ = 100 + 20x©û - 3x©ü + 120x©ý a. Identify the y-intercept and partial regression coefficient. b. If x©û = 12, x©ü = 5, and x©ý c. If x©ý were to increase by 4, what change would be necessary in x©ü in order for the e...
16 years ago
The quarterly seasonal indexes for a firm’s electricity consumption are 115, 92, 81, and 112 for quarters I-IV. It has been forecast that electricity consumption will be 850,000 kilowatt-hours during 2008. Forecast electricity consumption for each quarter...
16 years ago
A regression model has 2 independent variables and 16 observations, and the calculated Durbin-Watson d statistic is 2.78. What, if any, conclusion will be reached in testing for autocorrelation of the residuals with a: a. two-tail test at the 0.05 level o...
16 years ago
When autocorrelation of the residuals is present, what effect can this have on interval estimation and significance tests regarding the regression model involved?
16 years ago
A right-tailed area in the chi-square distribution equals 0.05. For 8 degrees of freedom the table value equals: A) 11.07 B) 15.507 C) 13.362 D) 17.535 E) 16.182
16 years ago
Answers
The following answers were posted by visitors named Yadira M.