Answer:
C) 20.97 AED
Step-by-step explanation:
To find the expected value, E(X), or mean μ of a discrete random variable X, simply multiply each value of the random variable by its probability and add the products. The formula is given as
.
Here, x represents values of the random variable X,
represents the corresponding probability, and symbol
represents the sum of all products
. Here we use the symbol
for the mean because it is a parameter. It represents the mean of a population.
In this case, the expected value of the ticket is 
This means that Ahmad can expect to win 20.97 AED for the ticket.
Answer:
82.5% and 17.5%
Step-by-step explanation:
The telemarketer made 200 phone calls and only 35 people signed up. Therefore, we need to find the amount of people who didnt.
200 - 35 = 165
165 people did not sign up.
This meants that the frequency of getting a customer is 35/200 and not is 165/200. In percentages,
The relative frequency of not getting a customer is 82.5%
The relative frequency of getting a customer is 17.5%
Answer:
y=3x-10
Step-by-step explanation:
To find equation of the line passing through points
and A(xa, ya) and B(xb, yb)
, we use formula: y-ya = yb-ya/xb-xa (x-xa)
In this example we have xa=
6 ,ya=
8 , xb=5
and yb=5
. So,
y-ya= yb-ya / xb-xa (x-xa)
y-8 = 5-8/ 5-6 (x-6)
y-8= 3(x-6)
y-8= 3x-18
y-8= 3x-10
y = 3x - 10
Answer is D hope I helped
Answer:

Step-by-step explanation:
We have:

To solve, we will isolate the x variable. Therefore, subtract 7 from both sides:

Divide both sides by 2:

Take the square root of both sides. Since we’re taking an event root, we will need plus/minus. Therefore:

Therefore, our solutions are:
