Answer:
E(Y) = 1.666667
Step-by-step explanation:
By E(Y), we mean the expected value of Y. This is given as:
E(Y) = ,
Where F is the frequency.
As given:
The sample space (S) = {T,T,H}
And has a probability of:
H = 1/3
T = 2/3.
Frequency:
H = 1
T = 2.
Thus,
E(Y) = 1*(1/3) + 2*(2/3)
E(Y) = 1.666667.
Answer:
0.853
Step-by-step explanation:
Use conditional probability. The probability of event A, given that event B has occurred, is:
P(A|B) = P(A and B) / P(B)
The probability that it is not raining, given that the flight leaves on time, is:
P(not raining | on time) = P(not raining AND on time) / P(on time)
P(not raining | on time) = 0.81 / (1 − 0.05)
P(not raining | on time) = 0.853
$1.75
let the pair of socks be x and a shirt be y.
y+8x=22.95
And y is said to be 8.95
8.95+8x=22.95
Collect like ternms