Using the pavement marking data: a. Test the hypothesis that the variance for the detection distance for females is different from the variance for the detection distance for males. b. Recommend a confidence interval for the difference in detection distance for females and males. Would you use the equal or unequal variances assumption when constructing the confidence interval? c. Determine how the confidence interval would change if the device measuring the distance has a bias of 3 feet. (Hint: If a bathroom scale measures 1 pound overweight, how does that affect the difference in weight of two people who use the scale?)
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