The probability that a sample of size n will have a mean,
, less that a given value, X, where the population mean,
, and the population standard deviation,
, is known is given by:
Therefore, the required probability is given by:
X + 7 = -6/3
x + 7 = -2
x = -2 - 7
Answer: x = -9
0.43 converted into a fraction should be 43/100
So first you need to combine like terms:
7b -2/5 = 6b - 7/5
+2/5 +2/5
7b = 6b -5/5
7b = 6b -1
-6b -6b
b=-1
Answer:
120
Step-by-step explanation:
the lcm of those numbers is 120 I believe.