198 is the answer ok ok ok
Expected value
E[x] = ∑ xP(x) = 50*0.4+100*0.6 = $80
The expected value of a prize is $80.
Answer:
Gradient of line A = 4
Gradient of line B = -2
Step-by-step explanation:
To solve this question, we will use the formula for gradient passing through two points and ,
Gradient (m) =
For line A,
Since, line A passes through (3, 6) and (4, 10)
Gradient of line A =
= 4
For line B,
Since, line B passes through (1, 6) and (2, 4),
Gradient of line B =
= -2
Answer:
a. 1/3 or about 33.33%
b. 5/6 or about 83.33%
Step-by-step explanation: