section 5.2 homework\nscore: 1/15 answered: 1/15\nquestion 2\nfind the indicated probability\ngiven\np(a)=0.5…
section 5.2 homework\nscore: 1/15 answered: 1/15\nquestion 2\nfind the indicated probability\ngiven\np(a)=0.55\np(b)=0.55\np(a and b)=0.3\np(a or b)=
Answer
Explanation:
Step1: Recall the formula
The formula for $P(A\ or\ B)$ is $P(A\ or\ B)=P(A)+P(B)-P(A\ and\ B)$.
Step2: Substitute the given values
Substitute $P(A) = 0.55$, $P(B)=0.55$ and $P(A\ and\ B)=0.3$ into the formula. So $P(A\ or\ B)=0.55 + 0.55- 0.3$.
Step3: Calculate the result
$0.55+0.55 - 0.3=0.8$.
Answer:
$0.8$