A random variable can be either discrete or continuous. It is discrete it can assume only a finite number of values, or a countable infinity of values at most.
It is continuous if it can assume values in an interval, or in general, an uncountable infinity of values.
That being said, we have:
Option A is a discrete random variable, because the number of heads in 5 throws can be 0, 1, 2, 3, 4 or 5. So, we have finitely many possible values.
Option B is a discrete random variable, because the number you roll on a die is either1, 2, 3, 4, 5 or 6. So, we have finitely many possible values.
Option C is a discrete random variable, because if there are n students in a class, the number of boys is an integer between 0 and n. So, we have finitely many possible values.
Option D is finally a continuous random variable, because the height of a 10-year-old can be any number (in a suitable range of course).
Answer:
I think it's A
Step-by-step explanation:
Subtract 24-10 and it leaves you with 14
Answer:
2/3
Step-by-step explanation:
1+1=2
3 stays the same
Answer:
$3,750
Step-by-step explanation:
In english:
First we need to calculate the area of the garden. As it is a triangle we calculate the area as:
area = (base*height)/2
The base is 25m and the height 15m, so the area is:
area = 25*15/2 = 187.5 m2
As each m2 costs $20, for the whole cost we need to calculate the product between 187.5 m2 and $20:
cost = 187.5 * $20 = $3,750
Total cost: $3,750
In spanish (en espanol):
Primero necesitamos calcular el área del jardín. Como es un triángulo calculamos el área como:
área = (base * altura) / 2
La base mide 25 my la altura 15 m, por lo que el área es:
área = 25 * 15/2 = 187.5 m2
Como cada m2 cuesta $ 20, para el costo total necesitamos calcular el producto entre 187.5 m2 y $ 20:
costo = 187.5 * $ 20 = $ 3,750
Costo total: $3,750
Answer:
The answer is $0.05.
Step-by-step explanation:
Find the mean, then subtract both the means.
0.54142857142-0.49428571428=x
x=0.047143
If estimated it is 0.05.
