An elementary school class ran one mile with a mean of 11 minutes and a standard

Question

An elementary school class ran one mile with a mean of 11 minutes and a standard devlation of three minutes. Rachel, a student in the class, ran one mile in nine minutes A Junior high school clas ran one mile with a mean of nine minutes and a standard devfation of two minutes. Kenjl, a student in the class, ran 1 mile in 8.5 minutes. A high school class ran one mile with a mean of eight minutes and a standard deviation of four minutes. Nedda, a student in the class, ran one mile in ten minutes (a) Why is Kenjl considered a better nunner than Nedda, even though Nedda ran faster than he? (Round your standard deviations to two decimal places) Kenj is considered a better runner than Nedda because Kenj's time for one mile was class and Nedda's time was. standard deviations-seed.] than her dass. standard deviations E-Selec-. than the mean of his (b) who is the fastest runner with respect to his or her class? Explain why. (Round your standard deviation to two decimal places) Seledwas the fastest runner with respect to his/her class as he/she had a time that was class standard deviation(s) faster than his/her

Explanation / Answer

(a)

Kenji is considered a better runner than Nedda because Kenji's time for one mile was 0.25 standard deviations less/ left/faster than the mean of his class and Nedda's time was 0.50 standard deviations more/right/slower than her class.

(b)

Rachel is the fastest runner with respect to her class as she had a time that was 0.67 standard deviations faster than her class.

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