Question

CBSE CLASS 9 MATHEMATICS/ MCQ
Multiple Choice Questions / PROBABILITY – Chapter 15
1. The probability of an event lies between ——– and ————
A. 0 and 1
B. 1 and 2
C. 0 and -1
2. The empirical (or experimental) probability p (E) of an event E is given by —
A. Number of trials in which E has happened / Total number of trials
B. Total number of trials / Number of trials in which E has happened.
C. None of these.
3. A coin is tossed 100 times with the following frequencies:
Head: 45, Tail: 55
The probability for each event is ———————
A. 0.45, 0.55
B. 4.5, 5.5
C. 0.045, 0. 055
4. If P (E) = 0.47 then P (not E) will be ————–
A. 0.47
B. 0.53
C. 0.03
5. Probability of getting odd number in a single throw of dice is ————-
A. ¼
B. ½
C. 1/6
6. Empirical probability of an event is also known as —————-
A. Experimental probability
B. Subjective probability
C. Classic probability​

Answer 1

Answer:

1 A) 0and1

2 C) none of them

3 c) 0.045,0.055

4 b) 0.53

5 C) 1/3

6 a) Experimental Probability

Answer 2

Answer:

1. A) 0 and 1
2. A) P(E) = (Number of trials in which event E has happened) /(Total number of trials)
3. A) 0.45,0.55
4. B) 0.53
5. B) 1/2
6. A) Experimental probability

Step-by-step explanation:

P(not E) = 1 - P(E)

= 1 - 0.47

= 0.53