3) Pat has 5 white beads and 1 black bead in her bag. She asks two friends about the probability of picking a black bead without looking in the bag.
3) Pat has 5 white beads and 1 black bead in her bag. She asks two friends about the probability of picking a black bead without looking in the bag.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Can someone help with D? Thank you.
Transcribed Image Text:3) Pat has 5 white beads and 1 black bead in her bag. She asks two friends about the probability
of picking a black bead without looking in the bag.
Owen says: "it is because there are 5 white beads and 1 black bead.”
Maria says: "It is because there are 6 beads and 1 is black."
6
a) Which of Pat's friends is correct? Explain why the other friend is wrong.
7
b) Tracy has a different bag of black beads and white beads. The probability of picking a
black bead from Tracy's bag is What is the probability of picking a white bead from
Tracy's bag?
13
c) How many black beads and how many white beads could be in Tracy's bag?
d) Peter has a different bag of black beads and white beads. Peter has more beads in total
than Tracy. The probability of picking a black bead from Peter's bag is also. How
many black beads and how many with beads could be in Peter's bag?
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