I do not know the answer but i need to answer a question in order to ask one,sorry,hope u understand:/
Answer:
3/4
Step-by-step explanation:
Just swap the colon (:) for a slash (/)
Since 68% of the sample ranges from the plus minus first standard deviation from the mean, then interval wherein it will occur will be between 53.5% to 60.5%. I got this answer through adding and subtracting one standard deviation (3.5) from the mean (which is 57).
Answer:
4
Step-by-step explanation:
can also be written as
. Evaluating this gives
=
= 