Friday

January 30, 2015

January 30, 2015

Posted by **David** on Tuesday, February 24, 2009 at 2:56pm.

Thank you!

- Probability/Statistics -
**drwls**, Tuesday, February 24, 2009 at 4:02pmThe answer is Prob(A) + Prob(B) - Prob (A + B)= 0.6 + 0.3 - 0.18 = 0.72

The last term avoids double counting of the occurence of both A and B, which satisfied the "A or B" criterion only once.

The answer is certainly not 0.3, since 60% of the events are A and satisfy the A or B requirement

**Answer this Question**

**Related Questions**

Statistics - 1. The Chi-square distribution, used in the Chi-square test of ...

probability & statistics - Q: if A and B are independent events, how many of the...

statistics - Which of the following is NOT true with respect to the properties ...

statistics - Which of the following is NOT true with respect to the properties ...

statistics - Define the concept of independent events with regards to ...

statistics - For two events, C and D, P(C)=.16 and P(D)=.18 If C and D are ...

Probability - Show that if events A B and C are independent that the following ...

statistics - If the probability of running out of gas is .03 and the probability...

Statistics - On a very short quiz, there is one multiple choice question with 5 ...

Math - In exercises 1 and 2, use the following information. You randomly draw ...