Mathematics, 24.10.2020 14:00 PrincessIndia
A runner's distribution of times for running 1,000 meters has a mean of 4.5 minutes with a standard deviation of 0.75
minutes. One of the runner's times has a z-score of -1.08. Which of the following statements is the best
interpretation of this Z-score?
This runner's time was faster than the mean time by 0.75 standard deviations
O This runner's time was faster than the mean time by 1.08 standard deviations.
O This runner's time was slower than the mean time by 0.75 standard deviations.
O This runner's time was slower than the mean time by 1.08 standard deviations
Answers: 2
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2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
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A runner's distribution of times for running 1,000 meters has a mean of 4.5 minutes with a standard...
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