Fill in the blanks. i. The probability of an impossible event is Class 9

Fill in the blanks. i. The probability of an impossible event is Class 9

Question 1.

Fill in the blanks.

i. The probability of an impossible event is _______. Class 9

ii. The set of all possible outcomes of a random experiment is called the _________ .

iii. The probability of an event that is certain to happen is _______.

iv. Tossing a fair coin has a probability of _____ for getting heads.

Answers:

i. 0

ii. sample space

iii. 1

iv. $\frac{1}{2}$

Question 2.

In a survey of 50 students, 15 students said they liked football. The number of students who like football is 15, and the ________ (frequency/relative frequency) is _______ (fill in the fraction or decimal). Class 9

Answer:

relative frequency, 0.3

Hint:

Total students = 50

Students who like football = 15

∴ Relative frequency = $\frac{15}{50}=\frac{3}{10}$ = 0.3