Refer to the data of speed x and stopping distance y given in Table 1.
The MINITAB commands for fitting a straight line regression to y€² = ˆšy and x are

(a) Obtain the computer output and identify the equation of the fitted line and the value of r2 (see Example 1).
(b) Give a 95% confidence interval for the slope.
(c) Obtain a 95% confidence interval for the expected y' value at x = 45.

Transcribed Image Text:

Data: CI2TI CI: 20 20 30 30 30 40 40 50 50 60 C2: 16.3 26.7 39.2 63.5 51.3 98.4 65.7 104.1 155.6 217.2 Dialog box: Calc > Calculator Type SQRT( C2) in the Expression box. Type C3 in Store box. Click OK Stat> Regression > Regression Type 03 in Response Type Cl in Predictors. Click OK