Answer:
(you)
(friend)
So as we can see we got the same z score for both cases so then we can conclude that:
You and your friend are equally ranked.
Step-by-step explanation:
Previous concepts
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".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:
Where and
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we have a z score greater we have a bettr result since the value would be on a higher percentile of the distribution. So if we find the two z scores for the scores given we got:
For the other instructor the distribution changes and would be:
Where and
And the z score for the friend would be:
So as we can see we got the same z score for both cases so then we can conclude that:
You and your friend are equally ranked.
It will take him 120 mins as he runs 8 minute miles
Answer:
41 degrees
Step-by-step explanation:
just subtract
Yes!!! Since it is an even number ending in 0; 2, 5, and 10 are given. It is also divisible by 3.