Question 1

The idea that as sample size increases, the distribution of sample means of samples of size n, when randomly selected, approaches a normal distribution is known as the ______.

Accepted Answer

The answer of The idea that as sample size increases,...

Question 2

The percentage of elements that meet some criterion is referred to as the _____.

Accepted Answer

The answer of The percentage of elements that meet some...

Question 3

A frequency distribution of the population elements is called a(n) _____ distribution.

Accepted Answer

The answer of A frequency distribution of the population elements...

Question 4

A frequency distribution organized into a table or graph that summarizes percentage values associated with particular values of a variable is called a(n) _____.

Accepted Answer

The answer of A frequency distribution organized into a table...

Question 5

The formula below is used to calculate the ______ . (ZS/E)²

Accepted Answer

The formula (ZS/E)^2 is used to calculate the sample size in statistics, where Z is the Z-score, S is the standard deviation, and E is the margin of error.

Question 6

Traditionally, market researchers have used the ______ percent confidence level in research studies.

Accepted Answer

The answer of Traditionally, market researchers have used the ______...

Question 7

The simplest measure of the dispersion of a set of scores is the ______ .

Accepted Answer

The answer of The simplest measure of the dispersion of...

Question 8

The middle score in the rank order of scores is called the ______ score.

Accepted Answer

The answer of The middle score in the rank order...

Question 9

In statistical terms, ______ the sample size ______ the width of the confidence interval about the mean at a given confidence level.

Accepted Answer

Increasing the sample size decreases the width of the confidence interval because it reduces the standard error, leading to a more precise estimate of the population mean.

Question 10

When a data set is summarized by counting the number of times each value for a variable occurs in the sample, this is known as a(n) ______.

Accepted Answer

The answer of When a data set is summarized by...

Question 11

A specified range of numbers within which a population mean is expected to lie is known as the ______ estimate.

Accepted Answer

The answer of A specified range of numbers within which...

Question 12

If 35 percent of TV viewers recalled seeing an ad for a Toyota Prius on a particular television program based on a sample of 800 viewers, the 95 percent confidence interval for this study would be between approximately _____.

Accepted Answer

We can use the formula for confidence interval as:
CI = p ± z*(sqrt(pq/n))
where
p = sample proportion = 0.35
q = 1-p = 0.65
n = sample size = 800
z = z-score for 95% confidence level = 1.96 (from standard normal distribution table)

Plugging in the values, we get:
CI = 0.35 ± 1.96*(sqrt(0.35*0.65/800))
CI = 0.35 ± 0.032
CI = (0.318, 0.382)

Therefore, the 95% confidence interval for the proportion of TV viewers who recalled seeing an ad for Toyota Prius is approximately between 32 percent and 38 percent.

Question 13

Three factors in determining sample size for questions involving means are: (1) the variance, or heterogeneity, of the population; (2) the magnitude of acceptable error; and (3) the _____.

Accepted Answer

The answer of Three factors in determining sample size for...

Question 14

The confidence interval for a proportion uses which of the following formulas?

Accepted Answer

The answer of The confidence interval for a proportion uses...

Question 15

An estimate of the population mean in the form of a single value is called a(n) _____.

Accepted Answer

The answer of An estimate of the population mean in...

Question 16

When you add up a set of scores and divide the result by the number of scores, you have determined the ______ of the distribution, which is a measure of central tendency.

Accepted Answer

The answer of When you add up a set of...

Question 17

Variables in a sample or measures computed from sample data are called _____.

Accepted Answer

The answer of Variables in a sample or measures computed...

Question 18

The standard deviation of the sampling distribution is called the ______ of the mean.

Accepted Answer

The answer of The standard deviation of the sampling distribution...

Question 19

The _____ distribution is bell shaped.

Accepted Answer

The answer of The _____ distribution is bell shaped....

Question 20

Which of the following is a step in determining sample size?

Accepted Answer

To determine sample size, it is important to estimate the standard deviation of the population, make a judgment about the allowable magnitude of error, and determine a confidence level. Therefore, all of these choices are steps in determining sample size.

Quiz 17: Determination of Sample Size: a Review of Statistical Theory

The idea that as sample size increases, the distribution of sample means of samples of size n, when randomly selected, approaches a normal distribution is known as the ______.

The percentage of elements that meet some criterion is referred to as the _____.

A frequency distribution of the population elements is called a(n) _____ distribution.

A frequency distribution organized into a table or graph that summarizes percentage values associated with particular values of a variable is called a(n) _____.

The formula below is used to calculate the ______ . (ZS/E) ²

Traditionally, market researchers have used the ______ percent confidence level in research studies.

The simplest measure of the dispersion of a set of scores is the ______ .

The middle score in the rank order of scores is called the ______ score.

In statistical terms, the sample size the width of the confidence interval about the mean at a given confidence level.

When a data set is summarized by counting the number of times each value for a variable occurs in the sample, this is known as a(n) ______.

A specified range of numbers within which a population mean is expected to lie is known as the ______ estimate.

If 35 percent of TV viewers recalled seeing an ad for a Toyota Prius on a particular television program based on a sample of 800 viewers, the 95 percent confidence interval for this study would be between approximately _____.

Three factors in determining sample size for questions involving means are: (1) the variance, or heterogeneity, of the population; (2) the magnitude of acceptable error; and (3) the _____.

The confidence interval for a proportion uses which of the following formulas?

An estimate of the population mean in the form of a single value is called a(n) _____.

When you add up a set of scores and divide the result by the number of scores, you have determined the ______ of the distribution, which is a measure of central tendency.

Variables in a sample or measures computed from sample data are called _____.

The standard deviation of the sampling distribution is called the ______ of the mean.

The _____ distribution is bell shaped.

Which of the following is a step in determining sample size?

Quiz 17: Determination of Sample Size: a Review of Statistical Theory

The idea that as sample size increases, the distribution of sample means of samples of size n, when randomly selected, approaches a normal distribution is known as the ______.

The percentage of elements that meet some criterion is referred to as the _____.

A frequency distribution of the population elements is called a(n) _____ distribution.

A frequency distribution organized into a table or graph that summarizes percentage values associated with particular values of a variable is called a(n) _____.

The formula below is used to calculate the ______ . (ZS/E) 2

Traditionally, market researchers have used the ______ percent confidence level in research studies.

The simplest measure of the dispersion of a set of scores is the ______ .

The middle score in the rank order of scores is called the ______ score.

In statistical terms, ______ the sample size ______ the width of the confidence interval about the mean at a given confidence level.

When a data set is summarized by counting the number of times each value for a variable occurs in the sample, this is known as a(n) ______.

A specified range of numbers within which a population mean is expected to lie is known as the ______ estimate.

If 35 percent of TV viewers recalled seeing an ad for a Toyota Prius on a particular television program based on a sample of 800 viewers, the 95 percent confidence interval for this study would be between approximately _____.

Three factors in determining sample size for questions involving means are: (1) the variance, or heterogeneity, of the population; (2) the magnitude of acceptable error; and (3) the _____.

The confidence interval for a proportion uses which of the following formulas?

An estimate of the population mean in the form of a single value is called a(n) _____.

When you add up a set of scores and divide the result by the number of scores, you have determined the ______ of the distribution, which is a measure of central tendency.

Variables in a sample or measures computed from sample data are called _____.

The standard deviation of the sampling distribution is called the ______ of the mean.

The _____ distribution is bell shaped.

Which of the following is a step in determining sample size?

The formula below is used to calculate the ______ . (ZS/E) ²

In statistical terms, the sample size the width of the confidence interval about the mean at a given confidence level.