Question

The weights (in pounds) of 6 vehicles and the variability of their braking distances (in feet) when stopping on a dry surface are shown in the table. Can you conclude that there is a significant linear correlation between vehicle weight and variability in braking distance on a dry surface? Use alphaequals0.05.

Weight, x= 5950 5370 6500 5100 5830 4800 Variability in braking distance, y= 1.77 1.98 1.88 1.56 1.69 1.50

1. Setup the hypothesis for the test.

2. Identify the critical value(s). Select the correct choice below and fill in any answer boxes within your choice The critical value is ____ Or The critical values are -t0=____ &t0=____

3. Calculate the test statistic. T=_____(Round to three decimal places as needed)

4. What is your conclusion? There ____(is or is not) enough evidence at the 5% level of significance to conclude that there____ (is is not) a significant linear correlation between vehicle weight and variability in braking distance on a dry surface.

Answer 1