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leonid [27]
3 years ago
6

Gina can run 21 laps in 7 minutes.what is her average running rate in laps per minute

Mathematics
2 answers:
zheka24 [161]3 years ago
7 0
3 because 21/7=3
hope this helps!!!

ivann1987 [24]3 years ago
5 0
Average running time = \frac{laps  run}{time  taken}
                                   = \frac{21  laps}{7  mins}
                                   = 3 laps / min 
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Step-by-step explanation:

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Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z  score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is  higher tor equal to 2.

For this case we have the mean and the deviation given:

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