If probability events A and B are independent what can we be sure of? P(ANB) = P(A) P (B) P(A) + P(B) = 1 P(A) = 0 A and B are mutually exclusive

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
ChapterCSR: Contents Of Student Resources
Section: Chapter Questions
Problem 11.22EP
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please send correct answer Q10

9
Sarah and Tom both answer the question below.
In a bag there are some black counters and some white counters.
Two counters are taken from the bag at random.
Work out the probability that both counters are black.
Sarah assumes that the first counter taken is replaced.
Tom assumes that the first counter is not replaced.
Which of the following statements is correct?
Sarah's answer will be bigger than Tom's
They will both get the same answer
Tom's answer will be bigger than Sarah's
More information is needed
10
If probability events A and B are independent what can we be sure of?
Р (AnB) — P(А) Р (В)
P(A) + P(B) = 1
P(A) = 0
A and B are mutually exclusive
Transcribed Image Text:9 Sarah and Tom both answer the question below. In a bag there are some black counters and some white counters. Two counters are taken from the bag at random. Work out the probability that both counters are black. Sarah assumes that the first counter taken is replaced. Tom assumes that the first counter is not replaced. Which of the following statements is correct? Sarah's answer will be bigger than Tom's They will both get the same answer Tom's answer will be bigger than Sarah's More information is needed 10 If probability events A and B are independent what can we be sure of? Р (AnB) — P(А) Р (В) P(A) + P(B) = 1 P(A) = 0 A and B are mutually exclusive
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