IAL Edexcel S2 Continuous Random Variables

IAL Edexcel S2 Continuous Random Variables

-Understand the use of a Probability Density Function

-Understand use of a Cumulative Distribution Function

-Find Mean, Median, Mode, Quartiles and Percentiles of CRV

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

Measuring the length of time it takes before a dolphin surfaces in the ocean to breath

• Discrete Random Variable

• Continuous Random Variable

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

Measuring the distance travelled by different cars using 1-liter of gasoline

• Discrete Random Variable

• Continuous Random Variable

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

Recording number of medals that the Philippine team won in each of the past 20 Olympic games

• Discrete Random Variable

• Continuous Random Variable

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

tossing a pair of fair coins

• Discrete Random Variable

• Continuous Random Variable

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

Collecting data about the mileage per liter of a certain brand and model of a car

• Discrete Random Variable

• Continuous Random Variable

Multiple Choice

Identify whether the experiment involves a discrete or a continuous random variable.

Rotating a spinner that has 4 equally divided parts: blue, green, yellow, and red

• Discrete Random Variable

• Continuous Random Variable

Fill in the Blanks

What is the Probability x=3

in terms of k

Fill in the Blanks

What is the Probability x=5

in terms of k

Fill in the Blanks

What is the Probability x=7

in terms of k

Fill in the Blanks

What is the value of k?

as a fraction

Multiple Choice

What is  $P\left(x\ge5\right)$   

•  $\frac{3}{5}$  

•  $\frac{4}{5}$  

•  $\frac{4}{9}$  

•  $\frac{7}{9}$  

Multiple Choice

Integrate  $x^3-3x^2+2x$  

•  $3x^2-6x$  
  

•  $\frac{x^4}{4}-x^3+x^2$  + c
  

Multiple Choice

Find the area under the curve  $y=x^3-3x^2+2x$  

between x=0 and x=1 

• 4

• - $\frac{1}{2}$  

•  $\frac{1}{4}$  

Multiple Choice

Find $P\left(1.5<x<2\right)$  to 3dp

• 0.584

• 0.583

• 0.582

• 0.585

Fill in the Blanks

What is the value of k?

(as a fraction)

Fill in the Blanks

What is $P\left(0.3<x\le0.6\right)$  (to 3dp)

Fill in the Blanks

What is $P\left(\left|x\right|<0.2\right)$  (to 3dp)

IAL Textbook

Exercise 4A page 63

Try your best working through Exercise 4A