6) A pharmaceutical company has just tested a new drug for asthma called Advair. The testers state that during testing with the 100mcg dosage pill 12% of test subjects reported headaches. If we assume that the testing reflects the general population's response to the drug, determine the following probabilities for four people chosen at random: i) All 4 do not get headaches ii) Exactly one of the four gets a headache iii) At least 2 do not get headaches

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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5) The Environmental Protection Agency must visit nine factories for complaints of air pollution.
In how many different ways can a representative visit five of these to investigate in one week?
6) A pharmaceutical company has just tested a new drug for asthma called Advair. The testers
state that during testing with the 100mcg dosage pill 12% of test subjects reported headaches. If
we assume that the testing reflects the general population's response to the drug, determine the
following probabilities for four people chosen at random:
i) All 4 do not get headaches
ii) Exactly one of the four gets a headache
iii) At least 2 do not get headaches
7) A password is to be made up of five characters where the first character is
of the alphabet (not case sensitive) and the next four characters can be any digit from 0 to
9 (digits can be repeated)
What is the probability that you will guess the correct password on the second attempt?
any
letter
8) About half of Americans born around 1920 had blue eyes. By mid-century that
number dropped to a third. Immigration patterns, intermarriage, and genetics all play a
part in the decline. While the drop-off has been happening for a century, the plunge in the
Today only about one 1 of
Transcribed Image Text:5) The Environmental Protection Agency must visit nine factories for complaints of air pollution. In how many different ways can a representative visit five of these to investigate in one week? 6) A pharmaceutical company has just tested a new drug for asthma called Advair. The testers state that during testing with the 100mcg dosage pill 12% of test subjects reported headaches. If we assume that the testing reflects the general population's response to the drug, determine the following probabilities for four people chosen at random: i) All 4 do not get headaches ii) Exactly one of the four gets a headache iii) At least 2 do not get headaches 7) A password is to be made up of five characters where the first character is of the alphabet (not case sensitive) and the next four characters can be any digit from 0 to 9 (digits can be repeated) What is the probability that you will guess the correct password on the second attempt? any letter 8) About half of Americans born around 1920 had blue eyes. By mid-century that number dropped to a third. Immigration patterns, intermarriage, and genetics all play a part in the decline. While the drop-off has been happening for a century, the plunge in the Today only about one 1 of
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