A study of 420,095 Danish cell phone users found that 0.0321% of them developed cancer of the brain or nervous system. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. [0.0317, 0.0325] O [0.0318, 0.0324] O [0.0112, 0.4455] O [0.0314, 0.0328]
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.
In this question 0.0321% is not a percentage but a proportion so it shouldn't have the % symbol
![A study of 420,095 Danish cell phone users found that 0.0321% of them developed
cancer of the brain or nervous system. Use the sample data to construct a 90%
confidence interval estimate of the percentage of cell phone users who develop
cancer of the brain or nervous system.
[0.0317, 0.0325]
[0.0318, 0.0324]
O [0.0112, 0.4455]
O [0.0314, 0.0328]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fabe1b391-2c88-48d7-b3f4-fb12294f50b4%2Fdacf9a24-0449-4f69-b5bb-91ed34281932%2F61y6rvm_processed.png&w=3840&q=75)
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