Answer:
2.6
Step-by-step explanation:
Given :
x 1 2 3 4
P(x) 0.3 0.2 ? 0.4
Σp(x) = 1
Hence, 0.3 + 0.2 +? + 0.4 = 1
0.9 +? = 1
? = 1 - 0.9
? = 0.1
For the mean :
E(X) = ΣX*P(X)
(1 * 0.3) + (2 * 0.2) + (3 *0.1) + (4* 0.4)
0.3 + 0.4 + 0.3 + 1.6 = 2.6
Hence, the mean = 2.6
Answer:
A: A number line going from negative 2 to positive 8 in increments of 1.Points are at 4 and 8.
Step-by-step explanation:
Hopefully this helps
5÷3=length
5 is the length of the banner and you need to know the length. You already know that the length is 1/3 of the width (5).
1.7 feet
