Question 1

h a standard deviation of .3.   
Without using t-scores, calculate the 95% confidence interval.

Accepted Answer

2.77-2.83

Question 2

The process of using a table of random numbers:

Accepted Answer

A) inevitably leads to calculation errors. 
B) yields a representative sample. 
C) yields a non-representative sample. 
D) pr oduces researcher-introduced bias. 
A) inevitably leads to calculation errors. 
B) yields a representative sample. 
C) yields a non-representative sample. 
D) pr oduces researcher-introduced bias. B

Question 3

The question below refers to the following situation:
An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.The standard error of the mean is __________.

Accepted Answer

6.36

Question 4

Through the sampling process, social researchers seek to generalize from a small group to a larger group.

Accepted Answer

A) True 
 B)False

Question 5

The question below refers to the following situation:
A researcher interested in school violence investigates the extent to which conflict occurs in schools. She obtains a weekly count of witnessed arguments from 15 students. The data
are as follows:   
The 99% confidence interval with 14 degrees of freedom is 2.977 according to the t Table.
Therefore, the values of this confidence interval are __________.

Accepted Answer

The answer of The question below refers to the following...

Question 6

Pollsters sometimes refer to sampling error as the:

Accepted Answer

A) mistake. 
B) mu. 
C) measure of central tendency. 
D) m argin of error. 
A) mistake. 
B) mu. 
C) measure of central tendency. 
D) m argin of error.

Question 7

h a standard deviation of .3.   
Estimate the standard error of the mean.

Accepted Answer

The answer of h a standard deviation of .3. ...

Question 8

The question below refers to the following situation:
A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools.
The standard error of the proportion is __________.

Accepted Answer

The answer of The question below refers to the following...

Question 9

The greater the degrees of freedom, the __________ the sample size and the __________ The t distribution approximates the normal distribution.

Accepted Answer

A) smaller; more closely 
B) larger; more closely 
C) larger; less closely
D )smaller; less closely 
A) smaller; more closely 
B) larger; more closely 
C) larger; less closely
D )smaller; less closely

Question 10

Research that analyzes a portion of an entire population is carried out on a(n):

Accepted Answer

A) sample. 
B) population. 
C) census. 
D) sur vey. 
A) sample. 
B) population. 
C) census. 
D) sur vey.

Question 11

In using a table of random numbers:

Accepted Answer

A) always disregard numbers that come up a second time. 
B) always disregard numbers that are higher than needed. 
C) always include your one favorite number. 
D) a and b 
A) always disregard numbers that come up a second time. 
B) always disregard numbers that are higher than needed. 
C) always include your one favorite number. 
D) a and b

Question 12

The question below refers to the following situation:
A random sample of 175 people surveyed were asked whether or not they always stop
completely at stop signs. Seventy-five percent responded that they do not.
What is the standard error of the proportion?

Accepted Answer

The answer of The question below refers to the following...

Question 13

The question below refers to the following situation:
An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Accepted Answer

The answer of The question below refers to the following...

Question 14

Researchers deal with an extra amount of uncertainty in estimating the standard error of The mean with this distribution:

Accepted Answer

A) normal 
B) z 
C) asymmetrical 
D) t 
A) normal 
B) z 
C) asymmetrical 
D) t

Question 15

When estimating a population mean, the degrees of freedom, df, is:

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 16

The question below refers to the following situation:
A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools.
Estimate the population proportion with a 95% confidence interval.

Accepted Answer

The answer of The question below refers to the following...

Question 17

The question below refers to the following situation:
An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Accepted Answer

The answer of The question below refers to the following...

Question 18

The question below refers to the following situation:
A researcher interested in school violence investigates the extent to which conflict occurs in schools. She obtains a weekly count of witnessed arguments from 15 students. The data are as follows:   
The unbiased estimate of the standard error of the mean is __________.

Accepted Answer

The answer of The question below refers to the following...

Question 19

Unfortunately, sampling error cannot be calculated.

Accepted Answer

A) True 
 B)False

Question 20

The question below refers to the following data:   
Estimate the standard error of the mean.

Accepted Answer

The answer of The question below refers to the following...

h a standard deviation of .3. Without using t-scores, calculate the 95% confidence interval.

The process of using a table of random numbers:

Through the sampling process, social researchers seek to generalize from a small group to a larger group.

Pollsters sometimes refer to sampling error as the:

h a standard deviation of .3. Estimate the standard error of the mean.

The question below refers to the following situation: A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools. The standard error of the proportion is __________.

The greater the degrees of freedom, the the sample size and the The t distribution approximates the normal distribution.

Research that analyzes a portion of an entire population is carried out on a(n):

In using a table of random numbers:

The question below refers to the following situation: A random sample of 175 people surveyed were asked whether or not they always stop completely at stop signs. Seventy-five percent responded that they do not. What is the standard error of the proportion?

The question below refers to the following situation: An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Researchers deal with an extra amount of uncertainty in estimating the standard error of The mean with this distribution:

When estimating a population mean, the degrees of freedom, df, is:

The question below refers to the following situation: A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools. Estimate the population proportion with a 95% confidence interval.

The question below refers to the following situation: An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Unfortunately, sampling error cannot be calculated.

The question below refers to the following data: Estimate the standard error of the mean.

Why the Social Researcher Uses Statistics

Organizing the Data

Measures of Central Tendency

Measures of Variability

Probability and the Normal Curve

Testing Differences Between Means

Analysis of Variance

Nonparametric Tests of Significance

Correlation

Regression Analysis

Nonparametric Measures of Correlation

Choosing Statistical Procedures for Research Problems

Filters

Exam 6: Samples and Populations

h a standard deviation of .3. Without using t-scores, calculate the 95% confidence interval.

The process of using a table of random numbers:

Through the sampling process, social researchers seek to generalize from a small group to a larger group.

Pollsters sometimes refer to sampling error as the:

h a standard deviation of .3. Estimate the standard error of the mean.

The question below refers to the following situation: A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools. The standard error of the proportion is __________.

The greater the degrees of freedom, the __________ the sample size and the __________ The t distribution approximates the normal distribution.

Research that analyzes a portion of an entire population is carried out on a(n):

In using a table of random numbers:

The question below refers to the following situation: A random sample of 175 people surveyed were asked whether or not they always stop completely at stop signs. Seventy-five percent responded that they do not. What is the standard error of the proportion?

The question below refers to the following situation: An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Researchers deal with an extra amount of uncertainty in estimating the standard error of The mean with this distribution:

When estimating a population mean, the degrees of freedom, df, is:

The question below refers to the following situation: A random sample of 500 registered voters in a city shows that 53% of the voters support higher taxes to help fund public schools. Estimate the population proportion with a 95% confidence interval.

The question below refers to the following situation: An education researcher is interested in studying student performance on the SAT. The researcher takes a random sample of 200 students and calculates a sample mean of 1600 and a sample standard deviation of 90.

Unfortunately, sampling error cannot be calculated.

The question below refers to the following data: Estimate the standard error of the mean.

Why the Social Researcher Uses Statistics

Organizing the Data

Measures of Central Tendency

Measures of Variability

Probability and the Normal Curve

Testing Differences Between Means

Analysis of Variance

Nonparametric Tests of Significance

Correlation

Regression Analysis

Nonparametric Measures of Correlation

Choosing Statistical Procedures for Research Problems

Filters

The greater the degrees of freedom, the the sample size and the The t distribution approximates the normal distribution.