Intro Stats
4th Edition
ISBN: 9780321825278
Author: Richard D. De Veaux, Paul F. Velleman, David E. Bock
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 12E
Surveying employees The company of Exercise 2 is considering ways to survey their employees. For each of these proposed designs, identify the problem.
- a) Leave a stack of surveys out in the employee cafeteria so people can pick them up and return them.
- b) Stuff a questionnaire in the mailbox of each employee with the request that they fill it out and return it.
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Determine how various attributes impact the purchase of a car. There are four attributes, each with three levels.
• Brand: Ford = 0, Chrysler = 1, GM =2
• MPG: 15 MPG = 0, 20 MPG = 1, 25 MPG = 2
Horsepower (HP): 100 HP = 0, 150 HP = 1, 200 HP = 2
• Price: $18,000 = 0, $21,000 = 1, $24,000 = 2
The nine product profiles ranked below were evaluated by a consumer: (note - the table should be reproduced using the dummy variables)
|(F, C, GM)
|(15, 20, 25)
|(100,150, 200) (18000, 21000, 24000)
Trial
Brand
MPG
Power
Price
Rank
4
2
1
1
2
7
2
1.
3
4
1.
1.
1.
2
1
9.
7
2.
2
8
8.
2
1
5
9
1
1
Q27. For this market segment, rank the product attributes from most important to least important.
Price > MPG = HP > Brand
O Price > MPG > HP > Brand
O MPG = Price > HP > Brand
MPG > HP > Price > Brand
2.
1.
2.
56
Each month interviewers visit about 63,000 of the 84 million households in the region and question the occupants over 14 years of age about their immigration status. Their responses enable the interviewers to estimate the percentage of people
in the labor force who are illegal immigrants. Complete parts a through c.
a. Define the population of interest to the interviewers.
A. The 63,000 households visited in the region
B. Immigration status
C. All people in the region who are over 14 years old
D. The 84 million households in the region
The quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 5% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another?
Location I
Location II
Location III
Location IV
7.1
6.6
4.6…
Chapter 10 Solutions
Intro Stats
Ch. 10.2 - Various claims are often made for surveys. Why is...Ch. 10.4 - We need to survey a random sample of the 300...Ch. 10 - Texas AM Administrators at Texas AM University...Ch. 10 - Satisfied workers The managers of a large company...Ch. 10 - AM again The president of the university plans a...Ch. 10 - Satisfied respondents The companys annual report...Ch. 10 - Sampling students A professor teaching a large...Ch. 10 - Sampling satisfaction A company hoping to assess...Ch. 10 - Sampling AM students For each scenario, identify...Ch. 10 - Satisfactory satisfaction samples For each...
Ch. 10 - Survey students What problems do you see with...Ch. 10 - Happy employees The company plans to have the head...Ch. 10 - Student samples The university administration of...Ch. 10 - Surveying employees The company of Exercise 2 is...Ch. 10 - Roper Through their Roper Reports Worldwide, GfK...Ch. 10 - Student center survey For their class project, a...Ch. 10 - Drug tests Major League Baseball tests players to...Ch. 10 - Prob. 16ECh. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - Prob. 18ECh. 10 - Prob. 19ECh. 10 - Prob. 20ECh. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - Mistaken poll A local TV station conducted a...Ch. 10 - Another mistaken poll Prior to the mayoral...Ch. 10 - Parent opinion, part 1 In a large city school...Ch. 10 - Parent opinion, part 2 Lets revisit the school...Ch. 10 - Prob. 28ECh. 10 - Prob. 29ECh. 10 - Roller coasters An amusement park has opened a new...Ch. 10 - Playground, act two The survey described in...Ch. 10 - Wording the survey Two members of the PTA...Ch. 10 - Banning ephedra An online poll on a website asked:...Ch. 10 - Survey questions Examine each of the following...Ch. 10 - More survey questions Examine each of the...Ch. 10 - Phone surveys Any time we conduct a survey, we...Ch. 10 - Cell phone survey What about drawing a random...Ch. 10 - Fuel economy Occasionally, when I fill my car with...Ch. 10 - Prob. 40ECh. 10 - Prob. 41ECh. 10 - Quality control Sammys Salsa, a small local...Ch. 10 - A fish story Concerned about reports of discolored...Ch. 10 - Prob. 44ECh. 10 - More sampling methods Consider each of these...
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- The quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 1%level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.6 6.7 4.8 4.9…arrow_forwardThe quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 5% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.4 6.3 4.5…arrow_forwardThe quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 5% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.6 6.3 4.6…arrow_forward
- Complete the table by filling in the values of LB (lower boundaries) andarrow_forwardSOLVING. Read each problem carefully and solve what is asked in the following. Use a separate paper for your answer and DON'T FORGET TO WRITE YOUR NAME. (Attached your paper on the test questionnaire.) II. 16 - 25. Albert has an assignment to ask at random 10 students in their school about their ages. The data are given in the table below. Name Age Name Age Ana 10 Tony 11 Ira 13 Lito 14 Susan 14 Christian 13 Antonette 13 Michael 15 Gladys 15 ol Dennis 12 Find the following: Q1 b. Q2 Q3 a. с. 26 - 35. Mrs. Marasigan is a veterinarian. One morning, she asked her secretary to record the service time for 15 customers. The following are service times in minutes. 20, 35, 55, 28, 46, 32, 25, 56, 55, 28, 37, 60, 47, 52, 17 Find the following: 2nd decile b. 6th decile gth decile a.arrow_forwarda. b. ● . Name: Dorthe Skill Builder: The Senior Prom Juniors in the student council of a high school are trying to come up with a budget for the senior prom. Here is some information they have gathered: Last year, 120 people attended. It was a success and is expected to be even bigger this year with up to 200 people expected. There needs to be at least 1 chaperone for every 20 students. The ticket price can not exceed $20 per person. The revenue from ticket sales needs to cover the cost of the meals and entertainment, and also make a profit of at least $200 to be contributed to the school. Define variables to represent: the number of people attending i. ii. iii. iv. Write inequalities for: i. the attendance ii. the number of chaperones needed iii. the ticket price iv. the revenue from the ticket sales Date: (A) C) 10 E) the number of chaperones needed the price of the tickets (T) the cost of meals and entertainment 200arrow_forward
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