9. Two balls are drawn successively without replacement from a bucket containing four red and three blue balls. Assume that all balls are equally likely to be chosen. a) Find the probability that both balls are red. b) Find the probability that at least one ball is blue. c) Find the probability that first ball is blue and the second one is red.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Number 9
8. Suppose that a recent poll of American households about pet ownership found that for
households with one pet, 39% owned a dog. Suppose a random sample of 120 households wit
only one pet is selected.
(a) Find the usual values interval for households with a pet dog.(41.5, 52.1)
(b) Determine whether it is unusual to find 40 household with a pet dog in a random,
independent sample of 120 households.
9. Two balls are drawn successively without replacement from a bucket containing four red and
three blue balls. Assume that all balls are equally likely to be chosen.
a) Find the probability that both balls are red.
b) Find the probability that at least one ball is blue.
c) Find the probability that first ball is blue and the second one is red.
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Transcribed Image Text:8. Suppose that a recent poll of American households about pet ownership found that for households with one pet, 39% owned a dog. Suppose a random sample of 120 households wit only one pet is selected. (a) Find the usual values interval for households with a pet dog.(41.5, 52.1) (b) Determine whether it is unusual to find 40 household with a pet dog in a random, independent sample of 120 households. 9. Two balls are drawn successively without replacement from a bucket containing four red and three blue balls. Assume that all balls are equally likely to be chosen. a) Find the probability that both balls are red. b) Find the probability that at least one ball is blue. c) Find the probability that first ball is blue and the second one is red. Desktop DELL F5 F6 F7 F8 F9 F10 F11 F12 PrtScr & 6 T Y 1O CO
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