Question 1

The true mean of the population must always be a known value before inferential techniques may be employed.

Accepted Answer

A) True 
 B)False

Question 2

Sampling error always produces bias.

Accepted Answer

A) True 
 B)False

Question 3

For the following set of sample scores, find the estimated standard error of the mean: 16, 10, 8, 6, 5, 3, 1, 1.

Accepted Answer

The answer of For the following set of sample scores,...

Question 4

Because of sampling error, the point estimate of the population mean can never provide the "best" estimate of a single parameter value.

Accepted Answer

A) True 
 B)False

Question 5

A researcher selects a random sample of 15 young adult females, all of whom were engaged to be married within the next three months. The women were given the MCS (Marriage Commitment Scale), a test with a female population mean of 25. Their scores were: 23,26,27,24,28,19,22,24,27,30,26,28,24,26,29.
-What is the mean of the sample?

Accepted Answer

Mean of th

Question 6

The smaller the standard deviation of the sample, for a given N, the larger is the estimated standard error of the mean.

Accepted Answer

A) True 
 B)False

Question 7

The higher the probability value of the confidence interval

Accepted Answer

A)  the broader becomes the range of predicted mean values 
B)  the more narrow becomes the range of predicted mean values 
C)  the less the sampling error 
D)  the greater the sampling error 
A)  the broader becomes the range of predicted mean values 
B)  the more narrow becomes the range of predicted mean values 
C)  the less the sampling error 
D)  the greater the sampling error

Question 8

The single-sample t ratio is used to compare

Accepted Answer

A)  two population means 
B)  a sample mean with an assumed or known population mean 
C)  two sample means 
D)  a single sample's mean with that same sample's standard deviation 
A)  two population means 
B)  a sample mean with an assumed or known population mean 
C)  two sample means 
D)  a single sample's mean with that same sample's standard deviation

Question 9

For the following set of sample scores, estimate the population mean within a .95 confidence interval: 15, 18, 12, 17, 19.

Accepted Answer

From 12.75

Question 10

For the following set of sample scores, find the estimated standard error of the mean: 15, 14, 14, 13, 12, 12, 12, 11, 10, 9, 9.

Accepted Answer

The answer of For the following set of sample scores,...

Question 11

The true population mean is expected to fall outside a .99 confidence interval

Accepted Answer

A)  1% of the time 
B)  99% of the time 
C)  100% of the time 
D)  none of these, since the true mean may never fall outside the confidence interval 
A)  1% of the time 
B)  99% of the time 
C)  100% of the time 
D)  none of these, since the true mean may never fall outside the confidence interval

Question 12

For the t ratio, the larger the difference between the sample mean and the population mean (other things being equal), the greater the likelihood of

Accepted Answer

A)  rejecting Ho 
B)  failing to reject Ho 
C)  sampling error 
D)  committing the standard error 
A)  rejecting Ho 
B)  failing to reject Ho 
C)  sampling error 
D)  committing the standard error

Question 13

The single-sample t ratio may be used to compare the sample mean with an already known population mean.

Accepted Answer

A) True 
 B)False

Question 14

The estimated standard error of the mean becomes a better predictor whenever the distribution of sample means

Accepted Answer

A)  is skewed 
B)  is bimodal 
C)  is platykurtic 
D)  none of these 
A)  is skewed 
B)  is bimodal 
C)  is platykurtic 
D)  none of these

Question 15

For the following set of sample scores, estimate the population mean within a .99 confidence interval: 50, 45, 45, 40, 40, 40, 35, 35, 30.

Accepted Answer

From 33.15

Question 16

A researcher selects a random sample of 15 young adult females, all of whom were engaged to be married within the next three months. The women were given the MCS (Marriage Commitment Scale), a test with a female population mean of 25. Their scores were: 23,26,27,24,28,19,22,24,27,30,26,28,24,26,29.
-Find the single-sample t ratio.

Accepted Answer

t = .712 a

Question 17

Negative t ratios may sometimes lead to significant results.

Accepted Answer

A) True 
 B)False

Question 18

The estimated standard error of the mean is to the standard deviation of the entire distribution of all possible sample means as

Accepted Answer

A)  a statistic is to a parameter 
B)  a parameter is to a statistic 
C)  a parameter is to an estimate 
D)  a deviation score is to a raw score 
A)  a statistic is to a parameter 
B)  a parameter is to a statistic 
C)  a parameter is to an estimate 
D)  a deviation score is to a raw score

Question 19

SPSS Computer Problem The MMPI2 was given to a random sample of 15 men, all of whom had been convicted of auto theft. Their scores on the ASP scale (Anti-Social Practices) were recorded. The population mean on this test is 50.00. The sample scores were as follows: 52,55,48,60,52,49,49,53,56,62,53,56,50,52,53.
-What is the mean of the sample?

Accepted Answer

Mean of th

Question 20

The actual mean of the set of sample scores may be used directly to estimate the point value of the population mean.

Accepted Answer

A) True 
 B)False

The true mean of the population must always be a known value before inferential techniques may be employed.

Sampling error always produces bias.

For the following set of sample scores, find the estimated standard error of the mean: 16, 10, 8, 6, 5, 3, 1, 1.

Because of sampling error, the point estimate of the population mean can never provide the "best" estimate of a single parameter value.

The smaller the standard deviation of the sample, for a given N, the larger is the estimated standard error of the mean.

The higher the probability value of the confidence interval

The single-sample t ratio is used to compare

For the following set of sample scores, estimate the population mean within a .95 confidence interval: 15, 18, 12, 17, 19.

For the following set of sample scores, find the estimated standard error of the mean: 15, 14, 14, 13, 12, 12, 12, 11, 10, 9, 9.

The true population mean is expected to fall outside a .99 confidence interval

For the t ratio, the larger the difference between the sample mean and the population mean (other things being equal), the greater the likelihood of

The single-sample t ratio may be used to compare the sample mean with an already known population mean.

The estimated standard error of the mean becomes a better predictor whenever the distribution of sample means

For the following set of sample scores, estimate the population mean within a .99 confidence interval: 50, 45, 45, 40, 40, 40, 35, 35, 30.

Negative t ratios may sometimes lead to significant results.

The estimated standard error of the mean is to the standard deviation of the entire distribution of all possible sample means as

The actual mean of the set of sample scores may be used directly to estimate the point value of the population mean.

Introduction to Statistics

Percentages, Graphs and Measures of Central Tendency

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Probability

Statistics and Parameters

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters

Exam 8: Parameter Estimates

The true mean of the population must always be a known value before inferential techniques may be employed.

Sampling error always produces bias.

For the following set of sample scores, find the estimated standard error of the mean: 16, 10, 8, 6, 5, 3, 1, 1.

Because of sampling error, the point estimate of the population mean can never provide the "best" estimate of a single parameter value.

The smaller the standard deviation of the sample, for a given N, the larger is the estimated standard error of the mean.

The higher the probability value of the confidence interval

The single-sample t ratio is used to compare

For the following set of sample scores, estimate the population mean within a .95 confidence interval: 15, 18, 12, 17, 19.

For the following set of sample scores, find the estimated standard error of the mean: 15, 14, 14, 13, 12, 12, 12, 11, 10, 9, 9.

The true population mean is expected to fall outside a .99 confidence interval

For the t ratio, the larger the difference between the sample mean and the population mean (other things being equal), the greater the likelihood of

The single-sample t ratio may be used to compare the sample mean with an already known population mean.

The estimated standard error of the mean becomes a better predictor whenever the distribution of sample means

For the following set of sample scores, estimate the population mean within a .99 confidence interval: 50, 45, 45, 40, 40, 40, 35, 35, 30.

Negative t ratios may sometimes lead to significant results.

The estimated standard error of the mean is to the standard deviation of the entire distribution of all possible sample means as

The actual mean of the set of sample scores may be used directly to estimate the point value of the population mean.

Introduction to Statistics

Percentages, Graphs and Measures of Central Tendency

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Probability

Statistics and Parameters

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters