Download App

PROBABILITY — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsPROBABILITY1 Mark
Question
$P (A’ ∩ B) = 0.45$ and $A ∩ B = ∅$, find $P(B).$
✓

Answer

$P (A’ ∩ B) = 0.45$ and $A ∩ B = \Phi $ are given.
$\therefore P(A ∩ B) = 0$
Now, $P(A’ ∩ B) = P(B) – P(A ∩ B)$
$\therefore 0.45 = P(B) – 0$
$\therefore P(B) = 0.45$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Each" from PROBABILITY→PROBABILITY — all question types→Statistics STD 12 Commerce question papers→Gujarat Board STD 12 Commerce question papers→Gujarat Board question paper generator→

Similar questions

The correlation coefficient between $X$ and $Y$ is $0.4.$ What will be the value of correlation coefficient if $5$ is added in each observation of $X$ and $10$ is subtracted from each observation of $Y\ ?$
→
Give an example of indirect cause and effect relationship.
→
For a normal probability distribution Mean $=$ Variance. If standard deviation is $15$ then what is the mean of distribution?
→
What is the other term used for trend ?
→
Standard score is independent of unit of measurement. Is this statement true or false?
→
State the interval of probability of success $P (S).$
→
“If $A⊂B$ the $P(A) \geq P(B)$”. Correct the statement.
→
What is the skewness of normal distribution?
→
Write the main characteristic of fixed base method.
→
Two events $A$ and $B$ are mutually exclusive and exhaustive. If the probability of event $A$ is twice the probability of $B$ then what is the probability of event $B?$
→