Answer:
The number of students who scored more than 90 points is 750.
Step-by-step explanation:
Quartiles are statistical measures that the divide the data into four groups.
The first quartile (Q₁) indicates that 25% of the observation are less than or equal to Q₁.
The second quartile (Q₂) indicates that 50% of the observation are less than or equal to Q₂.
The third quartile (Q₃) indicates that 75% of the observation are less than or equal to Q₃.
It is provided that the first quartile is at 90 points.
That is, P (X ≤ 90) = 0.25.
The probability that a student scores more than 90 points is:
P (X > 90) = 1 - P (X ≤ 90)
= 1 - 0.25
= 0.75
The number of students who scored more than 90 points is: 1000 × 0.75 = 750.
Answer:
- Set is a collection of specified object.
- The types of set are Finite Set. A set which contains a definite number of elements is called a finite set. ...
Infinite Set. A set which contains infinite number of elements is called an infinite set. ...
Subset. ...
Proper Subset. ...
Universal Set. ...
Empty Set or Null Set. ...
Singleton Set or Unit Set. ...
Equal Set.
- The operation used on sets are. 1 Intersection 2.Union 3.Difference 4.Compelement
(-1,1) and (0,0) are probably it
Answer:
449.60 or yellow
Step-by-step explanation:
