Exam 7: Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

There are about 70 million eligible voters in a society.A public opinion pollster has estimated their probable choices for the next president with a sample of 2,000 randomly selected citizens.In this example,the 2,000 citizens are a ____ and the 70 million eligible voters are a ____.

In estimation procedures,as the alpha level decreases,the corresponding Z score

By the theorems presented in the text,we know that the mean of a sampling distribution of sample means will be

In ____ of the cases,the mean of a sample selected by EPSEM will be more than $\pm$ 3 Z's from the population mean.

When we use larger samples (N > 100),we can assume a normal sampling distribution because of

Sample size and the width of confidence intervals

A random sample of 500 reports an average yearly income of $42,000 with a standard deviation of $1000.An estimate of the parameter at the 95% level is about $175 wide.In this research situation

Statistics are to parameters as

In comparing a sampling distribution with a population distribution,

The Central Limit Theorem states that as sample size becomes large

The most commonly used confidence level is

Samples are to populations as

In the United States,between 70% and 80% of the people who do the family grocery shopping are women.This is

Define and distinguish between the sample distribution,the sampling distribution,and the population distribution.How are these three distributions related to each other in inferential statistics? What symbols are used to identify the means and standard deviations of each of the three distributions?

Wider confidence intervals

The fundamental principle of probability sampling is that a sample selected by ____ is very likely to be ____.

The sizes of four samples vary as follows: Sample A,N = 100 Sample B,N = 76 Sample C,N = 1000 Sample D,N = 150 Which sample will produce the most efficient estimate?

The standard error of the mean is the same thing as

Polls tracking the presidential election of 2004 showed that

The standard deviation of the sampling distribution is represented by which of the following symbol(s)?