Roughly 95% of the data lies within 2 standard deviations of the mean.
So (100% - 95%)/2 = 2.5% of the data lies within each tail.
This means roughly 2.5% of the data is in the left hand tail.
Answer:
Step-by-step explanation:
x + 4y = 15
8x - 4y = -60
9x = -45
x = -5
-5 + 4y = 15
4y = 20
y = 5
(-5, 5)
Answer:
18
Step-by-step explanation:
it is a fundamental principle that sum of any two sides must be greater than third side
since sum of given sides is 10+7 = 17
hence any number greater than 17 for example 18 can be third side but confirm it with other sides
18 +10 is greater than 7 also 18+7 is greater than 10
hence other side can be 18