Answer:
The answer would be 12.571428571 units or 12.57units.
The Answer is C because you just have to
The answer to the question
What we can say with a good deal of certainty is that our sample is biased towards the higher spectrum and that the real value of the mean for our population is lower than the obtained value of our sample. If this is true, we should expect for the standard deviation to be higher than in the population.