a sprinter runs 400 meters in 54 seconds. What is the runner's average running rate in meter's per second?
2 answers:
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Answer:
214.5 seconds or less time will qualify individuals for such training
Step-by-step explanation:
given that the time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 150 sec and a standard deviation of 25 sec.
i.e. X the time that it takes a randomly selected job applicant to perform a certain task is N(150,25)
The fastest 10% are the ones who are above the 90th percentile
We know 90th percentile for Z std normal score is 1.28
Corresponding X score would be
Round off to one decimal
214.5 seconds or less time will qualify individuals for such training
<u><em>Answer is in bold</em></u>
Harry can first substitute 30 for t. He can then multiply by 30 to get a product of 10. Since 15 is equal to 30 × 1/2, Harry's solution is not correct.
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