Question
A random sample of testimonials for texting and driving videos and number of car crashes was measured, and the computer output for regression was obtained:
A random sample of testimonials for texting and driving videos and number of car crashes was measured, and the computer output for regression was obtained:
| Coefficients | Standard Error | t Stat | P-value | |
|---|---|---|---|---|
| Intercept | 9.983566646 | 1.400031473 | 7.130959 | 0.002045 |
| Testimonials | 0.119902617 | 0.038348632 | 3.12665 | 0.035299 |
R-sq. = 70.96%R-sq.(adj) = 63.70%
Part A: Use the computer output to determine the LSRL. Identify all the variables used in the equation. (3 points) Part B: What proportion of the variation in car crashes is explained by its linear relationship to video testimonials? Explain. (4 points) Part C: Determine if decreased accidents were caused by texting and driving videos. Explain your reasoning. (3 points)
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Auditing A Practical Approach
Authors: Robyn Moroney
1st Canadian Edition
978-1118472972, 1118472977, 978-1742165943
