The mean finish time for a yearly amateur auto race was 185.46 minutes with a st

Question

The mean finish time for a yearly amateur auto race was 185.46 minutes with a standard deviation of 0.366 minute. The winning car, driven by Ted finished in 184.47 minutes. The previous year's race had a mean finishing time of 111.8 with a standard deviation of 0.118 minute. The winning car that year, driven by Kate finished in 111.59 minutes. Find their respective z-scores. Who had the more convincing victory? Ted had a finish time with a z-score of Kate had a finish time with a z-score of (Round to two decimal places as needed)

Explanation / Answer

Ted z score= (x -mean)/SD = (184.47 -185.46)/0.366 = 2.70

kate z score= (x -mean)/SD = (111.59 -111.8)/0.118 = 1.78

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.