Current Attempt in Progress The high price of medicines is a source of major expense for those seniors in the United States who have to pay for these medicines themselves. A random sample of 2100 seniors who pay for their medicines showed that they spent an average of $4400 last year on medicines with a standard deviation of $800. Make a 99% confidence interval for the corresponding population mean. Round your answers to cents.
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.
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