Question 1

The following data was collected from a simple random sample of a population.   The mean of the population

Accepted Answer

A)  is 14. 
B)  is 15. 
C)  is 15.1581. 
D)  could be any value. 
A)  is 14. 
B)  is 15. 
C)  is 15.1581. 
D)  could be any value. D

Question 2

A data set that has so many observations that traditional statistical inference has little meaning is which of the following?

Accepted Answer

A)  Wide data 
B)  Strong data 
C)  Tall data 
D)  Huge data 
A)  Wide data 
B)  Strong data 
C)  Tall data 
D)  Huge data C

Question 3

Convenience sampling is an example of _____ sampling.

Accepted Answer

A)  probabilistic 
B)  stratified 
C)  nonprobabilistic 
D)  cluster 
A)  probabilistic 
B)  stratified 
C)  nonprobabilistic 
D)  cluster C

Question 4

The standard deviation of   is referred to as the​

Accepted Answer

A)  ​standard mean of x. 
B)  ​standard error of the mean. 
C)  ​sample standard mean. 
D)  ​sample mean deviation. 
A)  ​standard mean of x. 
B)  ​standard error of the mean. 
C)  ​sample standard mean. 
D)  ​sample mean deviation.

Question 5

As the sample size becomes larger, the sampling distribution of the sample mean approaches a _____ distribution.

Accepted Answer

A)  Binomial 
B)  Poisson 
C)  Normal 
D)  Chi-square 
A)  Binomial 
B)  Poisson 
C)  Normal 
D)  Chi-square

Question 6

A population has a mean of 300 and a standard deviation of 12.A sample of 64 observations will be taken.The probability that the sample mean will be between 295 to 305 is

Accepted Answer

A)  0.0009. 
B)  0.9991. 
C)  0.3231. 
D)  0.6769. 
A)  0.0009. 
B)  0.9991. 
C)  0.3231. 
D)  0.6769.

Question 7

Random samples of size 49 are taken from a population that has 200 elements, a mean of 180, and a variance of 196.The distribution of the population is unknown.The standard error of the mean is

Accepted Answer

A)  24.39. 
B)  28. 
C)  2. 
D)  1.74. 
A)  24.39. 
B)  28. 
C)  2. 
D)  1.74.

Question 8

How many simple random samples of size 3 can be selected from a population of size 8?

Accepted Answer

A)  336 
B)  24 
C)  56 
D)  6561 
A)  336 
B)  24 
C)  56 
D)  6561

Question 9

All of the following are true about the standard error of the mean except​

Accepted Answer

A)  ​it is larger than the standard deviation of the population. 
B)  ​it decreases as the sample size increases. 
C)  ​its value is influenced by the standard deviation of the population. 
D)  ​it measures the variability in sample means. 
A)  ​it is larger than the standard deviation of the population. 
B)  ​it decreases as the sample size increases. 
C)  ​its value is influenced by the standard deviation of the population. 
D)  ​it measures the variability in sample means.

Question 10

Four hundred people were asked whether gun laws should be more stringent.Three hundred said "yes," and 100 said "no".The point estimate of the proportion in the population who will respond "no" is

Accepted Answer

A)  75. 
B)  0.25. 
C)  0.75. 
D)  0.50. 
A)  75. 
B)  0.25. 
C)  0.75. 
D)  0.50.

Question 11

When some segments of the population are either more or less likely to respond to the survey mechanism is which of the following nonsampling errors?

Accepted Answer

A)  Coverage error 
B)  Nonresponse error 
C)  Measurement error 
D)  Research error 
A)  Coverage error 
B)  Nonresponse error 
C)  Measurement error 
D)  Research error

Question 12

The standard deviation of a point estimator is called the

Accepted Answer

A)  standard deviation. 
B)  standard error. 
C)  point estimator. 
D)  variance of estimation. 
A)  standard deviation. 
B)  standard error. 
C)  point estimator. 
D)  variance of estimation.

Question 13

A sample of 24 observations is taken from a population that has 150 elements.The sampling distribution of   is

Accepted Answer

A)  approximately normal because   is always approximately normally distributed. 
B)  approximately normal because the sample size is large in comparison to the population size. 
C)  approximately normal because of the central limit theorem. 
D)  normal if the population is normally distributed. 
A)  approximately normal because   is always approximately normally distributed. 
B)  approximately normal because the sample size is large in comparison to the population size. 
C)  approximately normal because of the central limit theorem. 
D)  normal if the population is normally distributed.

Question 14

Which of the following is(are) point estimator(s)?

Accepted Answer

A)  σ 
B)  μ 
C)  s 
D)  α 
A)  σ 
B)  μ 
C)  s 
D)  α

Question 15

The sampling distribution of the sample means

Accepted Answer

A)  is the probability distribution showing all possible values of the sample mean. 
B)  is used as a point estimator of the population mean μ. 
C)  is an unbiased estimator. 
D)  shows the distribution of all possible values of μ. 
A)  is the probability distribution showing all possible values of the sample mean. 
B)  is used as a point estimator of the population mean μ. 
C)  is an unbiased estimator. 
D)  shows the distribution of all possible values of μ.

Question 16

A single numerical value used as an estimate of a population parameter is known as a

Accepted Answer

A)  parameter. 
B)  population parameter. 
C)  mean estimator. 
D)  point estimate. 
A)  parameter. 
B)  population parameter. 
C)  mean estimator. 
D)  point estimate.

Question 17

The standard deviation of   is referred to as the _____ proportion.

Accepted Answer

A)  standard 
B)  sample mean 
C)  deviated 
D)  standard error of the 
A)  standard 
B)  sample mean 
C)  deviated 
D)  standard error of the

Question 18

The closer the sample mean is to the population mean,

Accepted Answer

A)  the larger the sampling error. 
B)  the smaller the sampling error. 
C)  the sampling error equals 1. 
D)  none of these alternatives is correct. 
A)  the larger the sampling error. 
B)  the smaller the sampling error. 
C)  the sampling error equals 1. 
D)  none of these alternatives is correct.

Question 19

The following data was collected from a simple random sample of a population.   If the population consisted of 10 elements, how many different random samples of size 6 could be drawn from the population?

Accepted Answer

A)  2 
B)  50 
C)  252 
D)  30,240 
A)  2 
B)  50 
C)  252 
D)  30,240

Question 20

Which of the following best describes the form of the sampling distribution of the sample proportion?

Accepted Answer

A)  When standardized, it is exactly the standard normal distribution. 
B)  When standardized, it is the t distribution. 
C)  It is approximately normal as long as n   30. 
D)  It is approximately normal as long as np   5 and n(1 - p)   5. 
A)  When standardized, it is exactly the standard normal distribution. 
B)  When standardized, it is the t distribution. 
C)  It is approximately normal as long as n   30. 
D)  It is approximately normal as long as np   5 and n(1 - p)   5.

The following data was collected from a simple random sample of a population. The mean of the population

A data set that has so many observations that traditional statistical inference has little meaning is which of the following?

Convenience sampling is an example of _____ sampling.

The standard deviation of is referred to as the

As the sample size becomes larger, the sampling distribution of the sample mean approaches a _____ distribution.

A population has a mean of 300 and a standard deviation of 12.A sample of 64 observations will be taken.The probability that the sample mean will be between 295 to 305 is

Random samples of size 49 are taken from a population that has 200 elements, a mean of 180, and a variance of 196.The distribution of the population is unknown.The standard error of the mean is

How many simple random samples of size 3 can be selected from a population of size 8?

All of the following are true about the standard error of the mean except

Four hundred people were asked whether gun laws should be more stringent.Three hundred said "yes," and 100 said "no".The point estimate of the proportion in the population who will respond "no" is

When some segments of the population are either more or less likely to respond to the survey mechanism is which of the following nonsampling errors?

The standard deviation of a point estimator is called the

A sample of 24 observations is taken from a population that has 150 elements.The sampling distribution of is

Which of the following is(are) point estimator(s)?

The sampling distribution of the sample means

A single numerical value used as an estimate of a population parameter is known as a

The standard deviation of is referred to as the _____ proportion.

The closer the sample mean is to the population mean,

The following data was collected from a simple random sample of a population. If the population consisted of 10 elements, how many different random samples of size 6 could be drawn from the population?

Which of the following best describes the form of the sampling distribution of the sample proportion?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 7: Sampling and Sampling Distributions

The following data was collected from a simple random sample of a population. The mean of the population

A data set that has so many observations that traditional statistical inference has little meaning is which of the following?

Convenience sampling is an example of _____ sampling.

The standard deviation of is referred to as the​

As the sample size becomes larger, the sampling distribution of the sample mean approaches a _____ distribution.

A population has a mean of 300 and a standard deviation of 12.A sample of 64 observations will be taken.The probability that the sample mean will be between 295 to 305 is

Random samples of size 49 are taken from a population that has 200 elements, a mean of 180, and a variance of 196.The distribution of the population is unknown.The standard error of the mean is

How many simple random samples of size 3 can be selected from a population of size 8?

All of the following are true about the standard error of the mean except​

Four hundred people were asked whether gun laws should be more stringent.Three hundred said "yes," and 100 said "no".The point estimate of the proportion in the population who will respond "no" is

When some segments of the population are either more or less likely to respond to the survey mechanism is which of the following nonsampling errors?

The standard deviation of a point estimator is called the

A sample of 24 observations is taken from a population that has 150 elements.The sampling distribution of is

Which of the following is(are) point estimator(s)?

The sampling distribution of the sample means

A single numerical value used as an estimate of a population parameter is known as a

The standard deviation of is referred to as the _____ proportion.

The closer the sample mean is to the population mean,

The following data was collected from a simple random sample of a population. If the population consisted of 10 elements, how many different random samples of size 6 could be drawn from the population?

Which of the following best describes the form of the sampling distribution of the sample proportion?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

The standard deviation of is referred to as the

All of the following are true about the standard error of the mean except