Question

In a routine brake inspection, six observations of the stopping distance (feet) of a particular truck at 20 mph under specified conditions were recorded. The average of these six stopping distances is 30.35 feet with a standard deviation of 0.752 feet. Do the data suggest that the true average stopping distance exceeds 30 feet?

A. Perform a complete test of hypothesis.  Show all the steps, it can be assumed that all the conditions are met. 5% level of significance.

B. Refer to your P-value from part A. Interpret the P-value in the context of this study.

C. What type of error is your conclusion subject to?

D. Describe the error and provide a potential consequence.

Answer 1