A new computer circuit was tested and the times (in nanoseconds) required to carry out different subroutines were recorded. Difficulty 1 3 3 4 5 6 6 6 Time 10 11 12 9 15 19 21 18 Find the regression line for the data. Assume x is the difficulty level and y is the time. (Round your values to four decimal places.)

For the following data: X                            Y 7                            16 5                            2 6                            1 3                            2 4                            9 Find the regression equation for predicting Y from X. Use the regression equation to find a predicted Y for each X.

Consider the following regression equation: y = -5.3 + 8.8x.What does 8.8 depict in the regression equation above? a. None of the options.  b. The direction of the line.      c. The point where x = 0.  d.  The y-intercept.

The file Galton on D2L contains the 928 observations Francis Galton used in 1885 to estimate the relationship between the heights of parents and the heights of their children. The column Children refers to the height (in inches) of a child, and the column Mid-Parents refers to the average height (in inches) of the mother and father of that child. You can download this file into Excel and Minitab. a. Calculate the regression Height of Children = a +b (Height of Mid-Parents). b. Calculate the average for Height of Children, and calculate the average Height of Mid-Parents. c. Create a new variable in Minitab which is the Height of Children measured in terms of deviations from its mean. Call this new variable y. Also, create a new variable in Minitab with is the Height of Mid-Parents measured in terms of deviations from its mean. Call this new variable x. Calculate the regression y = a + bx. You can create the new y and x variables in Excel of Minitab, whichever you find more convenient.…