ExamGOAL
Books
42
Subjective

Match the following.

Column I Column II
(i) 0.95 (a) An incorrect assignment
(ii) 0.02 (b) No chance of happening
(iii) $-$0.3 (c) As much chance of happening as not
(iv) 0.5 (d) Very likely to happen
(v) 0 (e) Very little chance of happening

Explanation

(i) 0.95 is very likely to happen, so it is close to 1.

(ii) 0.02 very little chance of happening because probability is very low.

(iii) $-$0.3 an incorrect assignment because probability of any events lie between 0 and 1.

(iv) 0.5 , as much chance of happening as not because sum of chances of happening and not happening is zero.

(v) 0, no chance of happening.

43
Subjective

Match the following.

Column I Column II
(i) If $E_1$ and $E_2$ are the two mutually exclusive events (a) $E_1 \cap E_2=E_1$
(ii) If $E_1$ and $E_2$ are the mutually exclusive and exhaustive events (b) $\left(E_1-E_2\right) \cup\left(E_1 \cap E_2\right)=E_1$
(iii) If $E_1$ and $E_2$ have common outcomes, then (c) $E_1 \cap E_2=\phi, E_1 \cup E_2=S$
(iv) If $E_1$ and $E_2$ are two events such that $E_1 \subset E_2$ (d) $E_1 \cap E_2=\phi$

Explanation

(i) If $E_1$ and $E_2$ are two mutually exclusive event, then $E_1 \cap E_2=\phi$.

(ii) If $E_1$ and $E_2$ are mutually exclusive and exhaustive events, then $E_1 \cap E_2=\phi$ and $E_1 \cup E_2=S$.

(iii) If $E_1$ and $E_2$ have common outcomes, then $\left(E_1-E_2\right) \cup\left(E_1 \cap E_2\right)=E_1$

(iv) If $E_1$ and $E_2$ are two events such that $E_1 \subset E_2 \Rightarrow E_1 \cap E_2=E_1$