Practice B Given the population 1,4,5,7, 9. Suppose sample size of 3 are drawn from this population. 1. What is the mean (u), variance (0) and standard deviation (O) of the population? 2. How many different samples of sizen = 3 can be drawn from the population? List them with their corresponding means. 3. Construct the sampling distribution of the sample mean. 4. What is the mean (4g) of the sampling distribution mean? Compare to the mean of the population. 5. What is the variance ( o; ) and standard (x ) of the sampling distribution of the sample means?

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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.