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Author Question: A physical fitness association is including the mile run in its secondary-school fitness test. The ... (Read 59 times)

Wadzanai

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  • Posts: 528
on: Feb 14, 2020

Question 1

True or False.

Nearly 100% of the observed occurrences of a random variable x that is normally distributed will fall within three standard deviations of the mean of the distribution of x.
◦ True
◦ False

Question 2

A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 440 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 325 seconds.
◦ .0107
◦ .4893
◦ .5107
◦ .9893
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by Wadzanai on Feb 14, 2020

beccamahon

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Wadzanai

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Reply 2 on: Feb 14, 2020
Great answer, keep it coming :)

31809pancho

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Reply 3 on: Yesterday
Gracias!

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