Suppose it is reported that 73 % of people subscribe to a cable or satellite televisia service. You decide to test this claim by randomly sampling 139 people and asking them if they subscribe to cable or satellite televsion. Is the distribution of the sample proportion normal? O No, the distribution of sample proportions is not normal since np 2 5 and n(1- p) 2 5 Yes, the distribution of sample proportions is normal since np 5 and n(1- p) 2 5 What is the mean of the distribution of the sample proportion? Hp %3D What is the standard deviation of the distribution of the sample proportion? o, = %3D Suppose we find from our sample that 77 subscribe to cable or satellite television service. What is the sample proportion? P %3D What is the probability that at least 77 subscribe to cable or satellite television service?

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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.