(a) What is the probability that among 12 randomly observed individuals exactly 8 do not cover their mouth when sneezing? (b) What is the probability that among 12 randomly observed individuals fewer than 4 do not cover their mouth when sneezing? (c) Would you be surprised if, after observing 12 individuals, fewer than half covered their mouth when sneezing? Why?
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
Please answer a-c and round to 4 decimal places.
![According to a study done by a university student, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe people's
habits as they sneeze.
(a) What is the probability that among 12 randomly observed individuals exactly 8 do not cover their mouth when sneezing?
(b) What is the probability that among 12 randomly observed individuals fewer than 4 do not cover their mouth when sneezing?
(c) Would you be surprised if, after observing 12 individuals, fewer than half covered their mouth when sneezing? Why?
(a) The probability that exactly 8 individuals do not cover their mouth is 0.0037
(Round to four decimal places as needed.)
(b) The probability that fewer than 4 individuals do not cover their mouth is.
(Round to four decimal places as needed.)
(c) Fewer than half of 12 individuals covering their mouth
be surprising because the probability of observing fewer than half covering their mouth when sneezing is 0.0206|, which
an unusual
event.
(Round to four decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Febd7e6a9-a945-48f5-aefb-c70db4c3e9d2%2Feaab2acc-0600-4c4e-9acc-bb62539a6eb3%2Fjyj6dqf_processed.png&w=3840&q=75)
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