Question 1

We expect the average value of many sample means to be close to the population mean from which they were drawn.

Accepted Answer

A) True 
 B)False  True

Question 2

As the size of the sample increases, the ---------.

Accepted Answer

A) standard error of the mean becomes smaller 
B) population standard deviation increases 
C) shape of the sampling distribution becomes wider 
D) sampling error increases 
A) standard error of the mean becomes smaller 
B) population standard deviation increases 
C) shape of the sampling distribution becomes wider 
D) sampling error increases A

Question 3

Soffritto Italian Grill served 220 dinners last Saturday night. The Chef's Special was ordered by 15% of the customers. A random sample of 50 customer orders from that evening was selected. What is the probability that between 8 and 12 of these orders were the Chef's Special?

Accepted Answer

A) 0.3912 
B) 0.8267 
C) 0.7418 
D) 0.5210 
A) 0.3912 
B) 0.8267 
C) 0.7418 
D) 0.5210 A

Question 4

An NCAA study reported that the average salary of the 300 major college football coaches is $1.47 million. Using a random sample of 30 coaches and a population standard deviation of $300,000, what is the probability that the sample mean is between $1.4 million and $1.5 million per year?

Accepted Answer

A) 0.7754 
B) 0.6829 
C) 0.9159 
D) 0.8660 
A) 0.7754 
B) 0.6829 
C) 0.9159 
D) 0.8660

Question 5

In Chapter 1, the textbook author provided the following extreme example of a poorly worded survey question: "We would like to propose a national golf holiday. Everybody gets the day off from work and can play golf all day. (You would not need permission from your spouse to play.)Are you in favor of this proposal?
A. Yes, most definitely.
B. Sure, why not?
C. No, I would rather spend the entire day at work.
P.S. If you choose C, we will permanently revoke all your golfing privileges everywhere in the country for the rest of your life. We are dead serious.""
The results of this survey would be unreliable due to

Accepted Answer

A) nonsampling error. 
B) judgment error. 
C) nonprobability error. 
D) sampling error. 
A) nonsampling error. 
B) judgment error. 
C) nonprobability error. 
D) sampling error.

Question 6

Recently, 18.3% of visitors to the Travelocity website hailed from the Google search engine. A random sample of 130 visitors on the Travelocity website was selected. The standard error of the proportion is _______________.

Accepted Answer

A) 0.0466 
B) 0.0548 
C) 0.0206 
D) 0.0339 
A) 0.0466 
B) 0.0548 
C) 0.0206 
D) 0.0339

Question 7

The national average price for regular gasoline was recently reported to be $3.29 per gallon. The standard deviation for the price of regular gasoline was $0.12. A random sample of 33 gas stations had an average price of $3.26. Which of the following statements is correct?

Accepted Answer

A) The interval that contains 95% of the sample means is $3.25 and $3.33. Because the sample 
B) The interval that contains 95% of the sample means is $3.20 and $3.38. Because the sample mean is between these two values, we do not have support that the average price for regular gasoline is $3.29 
C) The interval that contains 95% of the sample means is $3.23 and $3.35. Because the sample mean is between these two values, we do not have support that the average price for regular gasoline is $3.29. 
D) The interval that contains 95% of the sample means is $3.17 and $3.41. Because the sample mean is between these two values, we have support that the average price for regular gasoline is $3.29. 
A) The interval that contains 95% of the sample means is $3.25 and $3.33. Because the sample 
B) The interval that contains 95% of the sample means is $3.20 and $3.38. Because the sample mean is between these two values, we do not have support that the average price for regular gasoline is $3.29 
C) The interval that contains 95% of the sample means is $3.23 and $3.35. Because the sample mean is between these two values, we do not have support that the average price for regular gasoline is $3.29. 
D) The interval that contains 95% of the sample means is $3.17 and $3.41. Because the sample mean is between these two values, we have support that the average price for regular gasoline is $3.29.

Question 8

An Internet poll, where individuals may respond to a survey as many times as they choose to, is an example of a nonprobability sample.

Accepted Answer

A) True 
 B)False

Question 9

A recent study reported that 73% of Americans could only converse in one language. A random sample of 130 Americans was randomly selected. What is the probability that 100 or fewer of these Americans could only converse in one language?

Accepted Answer

A) 0.6389 
B) 0.9245 
C) 0.7510 
D) 0.8413 
A) 0.6389 
B) 0.9245 
C) 0.7510 
D) 0.8413

Question 10

Recent survey data indicated that 14.2% of adults between the ages of 25 and 34 live with their parents. A random sample of 125 young adults in this age group was selected. What is the probability that between 13 and 17 of these young adults lived with their parents?

Accepted Answer

A) 0.1808 
B) 0.3505 
C) 0.2620 
D) 0.3135 
A) 0.1808 
B) 0.3505 
C) 0.2620 
D) 0.3135

Question 11

The Affordable Care Act is a healthcare reform bill that President Obama signed into law on March 23, 2010. This bill is also known as "ObamaCare". A recent survey conducted by Jackson & Coker found that only 13% of doctors support this legislation. To validate these findings, a random sample of 300 doctors was asked if they support the Affordable Care Act. A total of 54 doctors from this sample responded that they supported this bill. Which of the following statements is correct?

Accepted Answer

A) The interval that contains 95% of the sample proportions is 0.064 and 0.196. Because the sample proportion is not between these two values, we do not have support for the results of the Jackson & Coker survey. 
B) The interval that contains 95% of the sample proportions is 0.092 and 0.168. Because the sample proportion is not between these two values, we do not have support for the results of the Jackson & Coker survey. 
C) The interval that contains 95% of the sample proportions is 0.064 and 0.196. Because the sample proportion is between these two values, we have support for the results of the Jackson & Coker survey. 
D) The interval that contains 95% of the sample proportions is 0.092 and 0.168. Because the sample proportion is between these two values, we have support for the results of the Jackson & Coker survey. 
A) The interval that contains 95% of the sample proportions is 0.064 and 0.196. Because the sample proportion is not between these two values, we do not have support for the results of the Jackson & Coker survey. 
B) The interval that contains 95% of the sample proportions is 0.092 and 0.168. Because the sample proportion is not between these two values, we do not have support for the results of the Jackson & Coker survey. 
C) The interval that contains 95% of the sample proportions is 0.064 and 0.196. Because the sample proportion is between these two values, we have support for the results of the Jackson & Coker survey. 
D) The interval that contains 95% of the sample proportions is 0.092 and 0.168. Because the sample proportion is between these two values, we have support for the results of the Jackson & Coker survey.

Question 12

According to Eurostat, 55.2% of households in Italy have one child, the highest percentage in the Euro zone. A random sample of 160 Italian households was selected. The standard error of the proportion is __________.

Accepted Answer

A) 0.0393 
B) 0.0165 
C) 0.0454 
D) 0.0410 
A) 0.0393 
B) 0.0165 
C) 0.0454 
D) 0.0410

Question 13

A convenience sample is an example of a nonprobability sample.

Accepted Answer

A) True 
 B)False

Question 14

Suppose the average math SAT score for students enrolled at Madison College is 507.3 with a standard deviation of 68.2. A random sample of 49 students has been selected. The standard error of the mean for this sample is ------------ .

Accepted Answer

A) 10.4 
B) 7.1 
C) 38.4 
D) 68.2 
A) 10.4 
B) 7.1 
C) 38.4 
D) 68.2

Question 15

Suppose the average amount spent per shopper at the Super Fresh Grocery Store last month was
$46.10. A sample of 25 transactions from last month was randomly selected. Another random sample of 50 transactions was also collected. We can be certain that the sampling error from the sample of 50 customers will be less than the sampling error from the 25 customers.

Accepted Answer

A) True 
 B)False

Question 16

MFP Research reported that average apartment rent in the U.S. is $1,083. A random sample of 39 apartments was selected. Using a population standard deviation of $227, what is the probability that the sample mean will be greater than $1,035?

Accepted Answer

A) 0.7060 
B) 0.9066 
C) 0.8319 
D) 0.7557 
A) 0.7060 
B) 0.9066 
C) 0.8319 
D) 0.7557

Question 17

The finite population correction factor for the standard error of the mean should be used when the ratio of the sample size to the size of the population exceeds -------- .

Accepted Answer

A) 5% 
B) 3% 
C) 2% 
D) 1% 
A) 5% 
B) 3% 
C) 2% 
D) 1%

Question 18

Taylor's Mill is a neighborhood comprised of 185 homes. According to the website Zillow, the average market value of the homes in this neighborhood is $418,300 with a standard deviation of $36,500. What is the standard error for a random sample of 32 homes from this neighborhood?

Accepted Answer

A) $7,510.35 
B) $5,883.76 
C) $4,153.87 
D) $6,452.35 
A) $7,510.35 
B) $5,883.76 
C) $4,153.87 
D) $6,452.35

Question 19

Susan would like to conduct a survey of homeowners in the Meadowbrook neighborhood to get their opinions on proposed road modifications in the area. Which of the following is an example of a cluster sample?

Accepted Answer

A) Susan selects every third house on each street in the neighborhood. 
B) Susan selects the first 20 homes that she passes as she walks into the entrance of the neighborhood. 
C) Susan randomly chooses two streets in the neighborhood and selects every home on these streets. 
D) None of these choices describes a cluster sample. 
A) Susan selects every third house on each street in the neighborhood. 
B) Susan selects the first 20 homes that she passes as she walks into the entrance of the neighborhood. 
C) Susan randomly chooses two streets in the neighborhood and selects every home on these streets. 
D) None of these choices describes a cluster sample.

Question 20

------ errors can occur as a result of a questionnaire that contains ambiguous questions.

Accepted Answer

A) Judgment 
B) Nonsampling 
C) Sampling 
D) Nonprobability 
A) Judgment 
B) Nonsampling 
C) Sampling 
D) Nonprobability

We expect the average value of many sample means to be close to the population mean from which they were drawn.

As the size of the sample increases, the ---------.

Soffritto Italian Grill served 220 dinners last Saturday night. The Chef's Special was ordered by 15% of the customers. A random sample of 50 customer orders from that evening was selected. What is the probability that between 8 and 12 of these orders were the Chef's Special?

An NCAA study reported that the average salary of the 300 major college football coaches is $1.47 million. Using a random sample of 30 coaches and a population standard deviation of $300,000, what is the probability that the sample mean is between $1.4 million and $1.5 million per year?

Recently, 18.3% of visitors to the Travelocity website hailed from the Google search engine. A random sample of 130 visitors on the Travelocity website was selected. The standard error of the proportion is _______________.

The national average price for regular gasoline was recently reported to be $3.29 per gallon. The standard deviation for the price of regular gasoline was $0.12. A random sample of 33 gas stations had an average price of $3.26. Which of the following statements is correct?

An Internet poll, where individuals may respond to a survey as many times as they choose to, is an example of a nonprobability sample.

A recent study reported that 73% of Americans could only converse in one language. A random sample of 130 Americans was randomly selected. What is the probability that 100 or fewer of these Americans could only converse in one language?

Recent survey data indicated that 14.2% of adults between the ages of 25 and 34 live with their parents. A random sample of 125 young adults in this age group was selected. What is the probability that between 13 and 17 of these young adults lived with their parents?

According to Eurostat, 55.2% of households in Italy have one child, the highest percentage in the Euro zone. A random sample of 160 Italian households was selected. The standard error of the proportion is __________.

A convenience sample is an example of a nonprobability sample.

Suppose the average math SAT score for students enrolled at Madison College is 507.3 with a standard deviation of 68.2. A random sample of 49 students has been selected. The standard error of the mean for this sample is ------------ .

MFP Research reported that average apartment rent in the U.S. is $1,083. A random sample of 39 apartments was selected. Using a population standard deviation of $227, what is the probability that the sample mean will be greater than $1,035?

The finite population correction factor for the standard error of the mean should be used when the ratio of the sample size to the size of the population exceeds -------- .

Taylor's Mill is a neighborhood comprised of 185 homes. According to the website Zillow, the average market value of the homes in this neighborhood is $418,300 with a standard deviation of $36,500. What is the standard error for a random sample of 32 homes from this neighborhood?

Susan would like to conduct a survey of homeowners in the Meadowbrook neighborhood to get their opinions on proposed road modifications in the area. Which of the following is an example of a cluster sample?

------ errors can occur as a result of a questionnaire that contains ambiguous questions.

Healthy Change

Psychosocial Health

Stress

Relationships and Sexuality

Reproductive Choices

Addiction and Drug Abuse

Nutrition

Weight Management and Body Image

Fitness

Cvd, Cancer, and Diabetes

Infectious Conditions

Violence and Unintentional Injuries

Environmental Health

Consumerism and Complementary and Alternative Medicine

Forecasting Techniques and Analysis for Time Series Data

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Exam 7: Alcohol and Tobacco

We expect the average value of many sample means to be close to the population mean from which they were drawn.

As the size of the sample increases, the ---------.

Soffritto Italian Grill served 220 dinners last Saturday night. The Chef's Special was ordered by 15% of the customers. A random sample of 50 customer orders from that evening was selected. What is the probability that between 8 and 12 of these orders were the Chef's Special?

An NCAA study reported that the average salary of the 300 major college football coaches is $1.47 million. Using a random sample of 30 coaches and a population standard deviation of $300,000, what is the probability that the sample mean is between $1.4 million and $1.5 million per year?

Recently, 18.3% of visitors to the Travelocity website hailed from the Google search engine. A random sample of 130 visitors on the Travelocity website was selected. The standard error of the proportion is _______________.

The national average price for regular gasoline was recently reported to be $3.29 per gallon. The standard deviation for the price of regular gasoline was $0.12. A random sample of 33 gas stations had an average price of $3.26. Which of the following statements is correct?

An Internet poll, where individuals may respond to a survey as many times as they choose to, is an example of a nonprobability sample.

A recent study reported that 73% of Americans could only converse in one language. A random sample of 130 Americans was randomly selected. What is the probability that 100 or fewer of these Americans could only converse in one language?

Recent survey data indicated that 14.2% of adults between the ages of 25 and 34 live with their parents. A random sample of 125 young adults in this age group was selected. What is the probability that between 13 and 17 of these young adults lived with their parents?

According to Eurostat, 55.2% of households in Italy have one child, the highest percentage in the Euro zone. A random sample of 160 Italian households was selected. The standard error of the proportion is __________.

A convenience sample is an example of a nonprobability sample.

Suppose the average math SAT score for students enrolled at Madison College is 507.3 with a standard deviation of 68.2. A random sample of 49 students has been selected. The standard error of the mean for this sample is ------------ .

MFP Research reported that average apartment rent in the U.S. is $1,083. A random sample of 39 apartments was selected. Using a population standard deviation of $227, what is the probability that the sample mean will be greater than $1,035?

The finite population correction factor for the standard error of the mean should be used when the ratio of the sample size to the size of the population exceeds -------- .

Taylor's Mill is a neighborhood comprised of 185 homes. According to the website Zillow, the average market value of the homes in this neighborhood is $418,300 with a standard deviation of $36,500. What is the standard error for a random sample of 32 homes from this neighborhood?

Susan would like to conduct a survey of homeowners in the Meadowbrook neighborhood to get their opinions on proposed road modifications in the area. Which of the following is an example of a cluster sample?

------ errors can occur as a result of a questionnaire that contains ambiguous questions.

Healthy Change

Psychosocial Health

Stress

Relationships and Sexuality

Reproductive Choices

Addiction and Drug Abuse

Nutrition

Weight Management and Body Image

Fitness

Cvd, Cancer, and Diabetes

Infectious Conditions

Violence and Unintentional Injuries

Environmental Health

Consumerism and Complementary and Alternative Medicine

Forecasting Techniques and Analysis for Time Series Data

Filters