EBK STATISTICS FOR MANAGEMENT AND ECONO
10th Edition
ISBN: 9780100546462
Author: KELLER
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Question
Chapter 13, Problem 203CE
To determine
Hypothesis test.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products, ( p1 ), will be no higher than the percentage of defectives found in a competitor's line, ( p2 ). To test this statement, the retailer took a random sample of 130 of the salesman's cellular phones and 110 of the competitor's cellular phones. The retailer found that 10 of the salesman's cellular phones and 5 of the competitor's cellular phones were defective. Does the retailer have enough evidence to reject the salesman's claim? Use a significance level of α=0.05 for the test. Step 5 of 6 : Determine the decision rule for rejecting the null hypothesis H0 . Round the numerical portion of your answer to three decimal places.
Textbook authors must be careful that the reading level of their book is appropriate for the target audience. Some methods of assessing reading level require estimating the average word length. We've randomly chosen 20 words from a randomly selected page in Intro Stats and counted the number of letters in each word:
5, 5, 2, 11, 3, 5, 6, 8, 5, 4, 7, 2, 9, 4, 8, 10, 4, 7, 6, 9
Suppose that our editor was hoping that the book would have a mean word length of 6.8 letters. Does this sample indicate that the authors failed to meet this goal? With a significance level of 0.05, test an appropriate hypothesis and state your conclusion. (i.e state the appropriate null and alternative hypotheses, calculate the test statistic, conclude and interpret it).
Many parents allow underage children to drink alcohol in limited situations when an adult is present to supervise. The idea is that teens will learn responsible drinking
habits if they first experience alcohol in a controlled environment. Other parents take a strict no-drinking approach. Researchers surveyed a sample of 200 students
aged 14 to 17, about their alcohol use and about alcohol related problems. Using a=0.05, answer the questions
No Alcohol related Problems
Alcohol Related Problems
Not allowed to drink
71
9
80
Allowed to drink
89
31
|120
160
40
N=200
What is the alternative hypothesis? [ Select]
What is the null hypothesis? [ Select]
What inferential test is being conducted? [ Select]
What is the obtained statistic? [ Select ]
What determines the critical value? [ Select ]
What is the critical value? [ Select ]
What is the decision rule? [ Select]
What is your decision? [ Select]
What is your conclusion? [ Select ]
Chapter 13 Solutions
EBK STATISTICS FOR MANAGEMENT AND ECONO
Ch. 13.1 - Prob. 5ECh. 13.1 - Prob. 6ECh. 13.1 - Prob. 7ECh. 13.1 - Prob. 8ECh. 13.1 - Prob. 9ECh. 13.1 - Prob. 10ECh. 13.1 - Prob. 11ECh. 13.1 - Prob. 12ECh. 13.1 - Prob. 13ECh. 13.1 - Prob. 14E
Ch. 13.1 - Prob. 15ECh. 13.1 - Prob. 16ECh. 13.1 - Prob. 17ECh. 13.1 - Prob. 18ECh. 13.1 - Prob. 19ECh. 13.1 - Prob. 20ECh. 13.1 - Prob. 21ECh. 13.1 - Prob. 22ECh. 13.1 - Prob. 23ECh. 13.1 - Prob. 24ECh. 13.1 - Prob. 25ECh. 13.1 - Prob. 26ECh. 13.1 - Prob. 27ECh. 13.1 - Prob. 28ECh. 13.1 - Prob. 29ECh. 13.1 - Prob. 30ECh. 13.1 - Prob. 31ECh. 13.1 - Prob. 32ECh. 13.1 - Prob. 33ECh. 13.1 - Prob. 34ECh. 13.1 - Prob. 35ECh. 13.1 - Prob. 36ECh. 13.1 - Prob. 37ECh. 13.1 - Prob. 38ECh. 13.1 - Prob. 39ECh. 13.1 - Prob. 40ECh. 13.1 - Prob. 41ECh. 13.1 - Prob. 42ECh. 13.1 - Prob. 43ECh. 13.1 - Prob. 44ECh. 13.1 - Prob. 45ECh. 13.1 - Prob. 46ECh. 13.1 - Prob. 47ECh. 13.1 - Prob. 48ECh. 13.1 - Prob. 49ECh. 13.1 - Prob. 50ECh. 13.1 - Prob. 51ECh. 13.1 - Prob. 52ECh. 13.1 - Prob. 53ECh. 13.1 - Prob. 54ECh. 13.1 - Prob. 55ECh. 13.1 - Prob. 56ECh. 13.1 - Prob. 57ECh. 13.1 - Prob. 58ECh. 13.1 - Prob. 59ECh. 13.1 - Prob. 60ECh. 13.1 - Prob. 61ECh. 13.1 - Prob. 62ECh. 13.1 - Prob. 63ECh. 13.1 - Prob. 64ECh. 13.1 - Prob. 65ECh. 13.1 - Prob. 66ECh. 13.1 - Prob. 67ECh. 13.1 - Prob. 68ECh. 13.1 - Prob. 69ECh. 13.1 - Prob. 70ECh. 13.1 - Prob. 71ECh. 13.1 - Prob. 72ECh. 13.1 - Prob. 73ECh. 13.1 - Prob. 74ECh. 13.1 - Prob. 75ECh. 13.1 - Prob. 76ECh. 13.1 - Prob. 77ECh. 13.1 - Prob. 78ECh. 13.1 - Prob. 79ECh. 13.1 - Prob. 80ECh. 13.1 - Prob. 81ECh. 13.1 - Prob. 82ECh. 13.1 - Prob. 83ECh. 13.1 - Prob. 84ECh. 13.1 - Prob. 85ECh. 13.1 - Prob. 86ECh. 13.1 - Prob. 87ECh. 13.1 - Prob. 88ECh. 13.2 - Prob. 89ECh. 13.2 - Prob. 90ECh. 13.2 - Prob. 91ECh. 13.2 - Prob. 92ECh. 13.2 - Prob. 93ECh. 13.2 - Prob. 94ECh. 13.2 - Prob. 95ECh. 13.3 - Prob. 96ECh. 13.3 - Prob. 97ECh. 13.3 - Prob. 98ECh. 13.3 - Prob. 99ECh. 13.3 - Prob. 100ECh. 13.3 - Prob. 101ECh. 13.3 - Prob. 102ECh. 13.3 - Prob. 103ECh. 13.3 - Prob. 104ECh. 13.3 - Prob. 105ECh. 13.3 - Prob. 106ECh. 13.3 - Prob. 107ECh. 13.3 - Prob. 108ECh. 13.3 - Prob. 109ECh. 13.3 - Prob. 110ECh. 13.3 - Prob. 111ECh. 13.3 - Prob. 112ECh. 13.3 - Prob. 113ECh. 13.3 - Prob. 116ECh. 13.3 - Prob. 117ECh. 13.4 - Prob. 120ECh. 13.4 - Prob. 121ECh. 13.4 - Prob. 122ECh. 13.4 - Prob. 123ECh. 13.4 - Prob. 124ECh. 13.4 - Prob. 125ECh. 13.4 - Prob. 126ECh. 13.4 - Prob. 127ECh. 13.4 - Prob. 128ECh. 13.5 - Prob. 131ECh. 13.5 - Prob. 132ECh. 13.5 - Prob. 133ECh. 13.5 - Prob. 134ECh. 13.5 - Prob. 135ECh. 13.5 - Prob. 136ECh. 13.5 - Prob. 137ECh. 13.5 - Prob. 138ECh. 13.5 - Prob. 139ECh. 13.5 - Prob. 140ECh. 13.5 - Prob. 141ECh. 13.5 - Prob. 142ECh. 13.5 - Prob. 143ECh. 13.5 - Prob. 144ECh. 13.5 - Prob. 145ECh. 13.5 - Prob. 146ECh. 13.5 - Prob. 147ECh. 13.5 - Prob. 148ECh. 13.5 - Prob. 149ECh. 13.5 - Prob. 150ECh. 13.5 - Prob. 151ECh. 13.5 - Prob. 152ECh. 13.5 - Prob. 153ECh. 13.5 - Prob. 154ECh. 13.5 - Prob. 155ECh. 13.5 - Prob. 156ECh. 13.5 - Prob. 157ECh. 13.5 - Prob. 158ECh. 13.5 - Prob. 159ECh. 13.5 - Prob. 160ECh. 13.5 - Prob. 161ECh. 13.5 - Prob. 162ECh. 13.5 - Prob. 165ECh. 13.5 - Prob. 166ECh. 13.5 - Prob. 167ECh. 13.5 - Prob. 168ECh. 13.5 - Prob. 169ECh. 13.5 - Prob. 170ECh. 13.5 - Prob. 171ECh. 13.5 - Prob. 172ECh. 13.5 - Prob. 173ECh. 13.5 - Prob. 174ECh. 13.5 - Prob. 175ECh. 13.5 - Prob. 176ECh. 13.5 - Prob. 177ECh. 13.5 - Prob. 178ECh. 13.5 - Prob. 179ECh. 13.5 - Prob. 180ECh. 13.5 - Prob. 181ECh. 13.5 - Prob. 182ECh. 13.5 - Prob. 183ECh. 13.A - Prob. 1ECh. 13.A - Prob. 2ECh. 13.A - Prob. 3ECh. 13.A - Prob. 4ECh. 13.A - Prob. 5ECh. 13.A - Prob. 6ECh. 13.A - Prob. 7ECh. 13.A - Prob. 8ECh. 13.A - Prob. 9ECh. 13.A - Prob. 10ECh. 13.A - Prob. 11ECh. 13.A - Prob. 12ECh. 13.A - Prob. 13ECh. 13.A - Prob. 14ECh. 13.A - Prob. 15ECh. 13.A - Prob. 16ECh. 13.A - Prob. 17ECh. 13.A - Prob. 18ECh. 13.A - Prob. 19ECh. 13.A - Prob. 20ECh. 13.A - Prob. 21ECh. 13.A - Prob. 22ECh. 13.A - Prob. 23ECh. 13.A - Prob. 24ECh. 13.A - Prob. 25ECh. 13.A - Prob. 26ECh. 13.A - Prob. 27ECh. 13.A - Prob. 28ECh. 13.A - Prob. 29ECh. 13.A - Prob. 30ECh. 13 - Prob. 184CECh. 13 - Prob. 185CECh. 13 - Prob. 186CECh. 13 - Prob. 187CECh. 13 - Prob. 188CECh. 13 - Prob. 189CECh. 13 - Prob. 190CECh. 13 - Prob. 191CECh. 13 - Prob. 192CECh. 13 - Prob. 193CECh. 13 - Prob. 194CECh. 13 - Prob. 195CECh. 13 - Prob. 196CECh. 13 - Prob. 197CECh. 13 - Prob. 198CECh. 13 - Prob. 199CECh. 13 - Prob. 200CECh. 13 - Prob. 201CECh. 13 - Prob. 202CECh. 13 - Prob. 203CECh. 13 - Prob. 204CECh. 13 - Prob. 205CECh. 13 - Prob. 206CECh. 13 - Prob. 207CECh. 13 - Prob. 208CECh. 13 - Prob. 209CECh. 13 - Prob. 210CECh. 13 - Prob. 211CECh. 13 - Prob. 212CECh. 13 - Prob. 213CECh. 13 - Prob. 214CECh. 13 - Prob. 215CECh. 13 - Prob. 216CECh. 13 - Prob. 217CECh. 13 - Prob. 218CECh. 13 - Prob. 219CECh. 13 - Prob. 220CECh. 13 - Prob. 221CECh. 13 - Prob. 222CECh. 13 - Prob. 223CECh. 13 - Prob. 224CECh. 13 - Prob. 225CECh. 13 - Prob. 226CECh. 13 - Prob. 227CECh. 13 - Prob. 228CECh. 13 - Prob. 229CECh. 13 - Prob. 230CECh. 13 - Prob. 231CE
Knowledge Booster
Similar questions
- Previous answer was poorly formatedarrow_forwardResearchers conducted a prospective cohort study to assess the association between dietary supplements and cognitive ability among children. A total of 500 children age 12-17 years who take an omega-3 fatty acid supplement are compared with 500 children age 12-17 years who do not take an omega-3 fatty acid supplement. Researchers follow the children for 2 years. During this time, 300 children who take the supplement earn what is classified as a “high” score on a cognitive test while 200 children who do not take the supplement earn what is classified as a “high” score on the same cognitive test. Show calculations. a) Construct a 2x2 table from the information presented above b) The risk difference is:arrow_forwardA researcher is interested in determining if there is a relationship between exercise and blood pressure for adults over 50. A random sample of 236 adults over 50 is selected and the results are given below. Blood Pressure | Low Moderate High Exercise Walkers Non-walkers | 21 35 62 25 65 28 Test the claim that walking and blood pressure are independent. Use a= 0.01.arrow_forward
- A company is considering an organizational change which entails adopting the use of self-managed work teams which they hope will lead to higher levels of employee satisfaction. In order to assess the attitudes of employees of the company towards this change a sample of 250 employees was selected and asked whether they favor the institution of self-managed teams. Three responses were allowed: favor, neutral or oppose. The observed frequency of the results of the survey are shown below: Opinion Type of Job Favor Neutral Oppose Total Hourly Worker 25 40 35 100 Supervision 45 35 20 100 Manager 20 15 15 50 Total 90 90 70 250 Use this data to test the hypothesis that opinion and type of job are independent at the .025 level.arrow_forwardQuestion: In two large populations, there are 30 and 25 per cent respectively of blue-eyed people. Is this difference likely to be hidden in samples of 1,200 and 900 respectively from the two populations ?arrow_forwardA number of particular articles has been classified according to their weights. After drying for two weeks the same articles have again been weighted and similarly classified. It is known that the median weight in the first weighing was 20-83 gm. while in the second weighing it was 17-35 gm. Some frequencies a and b in the first weighing and x and y in the second are missing. It is known that a = x and b missing frequencies. 1 5 y. Find out the values of the Class Frequencies Class Frequencies 1st weighing 2nd weighing 1st weighing 2nd weighing 0-5 15-20 52 a 50 5-10 20-25 75 30 10-15 11 40 25-30 22 28arrow_forward
- 10. Student A in our class ECON 2210 tried to estimate the average marks of the midterm held in March, 2022. Based on a random sample of 30 students' marks and with a 95% confidence level, the student arrived at an interval estimate for the average marks of between 50 and 80. (a) After receiving this result, student B in the same class claimed that there was a 95% chance that the true average marks of the midterm were between 50 and 80. How would you respond to this statement? Is it correct? Why or why not? (b) Student C in the same class did not agree with student B and he claimed that there was a 95% chance that the true average marks of the next midterm were between 50 and 80. How would you respond to this statement? Is it correct? Why or why not?arrow_forwardIn sample 400 parts manufactured by a factory, the number of defective parts was found to be 30. The company, however, claimed that almost 5% of their product is defective. Is the claim tenable?arrow_forwardAllegiant Airlines is considering an overbooking policy for one of its flights. The airplane has 50 seats, but Allegiant is considering accepting more reservations than seats because sometimes passengers do not show up for their flights, resulting in empty seats. The PassengerAppearance worksheet in the file Overbooking contains data on 1,000 passengers showing whether or not they showed up for their respective flights. In addition, Allegiant has conducted a field experiment to gauge the demand for reservations for the current flight. During this experiment, they did not limit the number of reservations for the flight to observe the uncensored demand. The following table summarizes the result of the field experiment. No. of Reservations Demanded Probability 48 0.05 49 0.05 50 0.15 51 0.30 52 0.25 53 0.10 54 0.10 Suppose Allegiant receives a marginal profit of $108 for each passenger who books a reservation (regardless of whether they show up). In addition, suppose…arrow_forward
- 7. Some years ago, a new brand of toothpaste was introduced in the United States. According to its advertisements, studies showed that it had "considerable success" in improving the health of a person's teeth. Suppose that these studies were designed in the following way. The manufacturer of this toothpaste chose three samples of seven people; the first sample agreed to use the new brand, the second sample used Brand A, and the third sample used Brand B. After six months, a dentist examined each person's teeth and scored the health of his or her teeth on a scale of 0 (lowest possible score) to 100 (highest possible score). The results were as follows: New Brand Brand A Brand B 65 58 54 71 60 38 53 63 43 55 90 61 34 95 94 82 89 96 77 62 82 The manufacturer of the new toothpaste says that the average score for the new brand is 2 points higher than for Brand A and 4 points higher than for Brand B. Would you agree with the manufacturer's advertisements? Explain.arrow_forwardQuestion 2 In the past, 15% of the mail order solicitations for a certain charity resulted in a financial contribution. A new solicitation letter that has been drafted is sent to a sample of 200 people and 45 responded with a contribution. At the .05 significance level can it be concluded that the new letter is more effective?arrow_forwardWhat sampling technique is used? In a research class of 40 students, the teacher divides the class into five groups, each with eight members per group. The teacher then asked the class to choose their group members based on interests, compatibility, and rapport. After the selection was made, the teacher realized that the abilities per group were uneven. He then reshuffled some members of the group to achieve equilibrium among the groups. The teacher needs ten students to represent each group. He selected one male and one female from each group based on academic performance, leadership skills, and social skills as qualities that will embody as representatives per group.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Economics (12th Edition)EconomicsISBN:9780134078779Author:Karl E. Case, Ray C. Fair, Sharon E. OsterPublisher:PEARSON
Engineering Economy (17th Edition)EconomicsISBN:9780134870069Author:William G. Sullivan, Elin M. Wicks, C. Patrick KoellingPublisher:PEARSON
Principles of Economics (MindTap Course List)EconomicsISBN:9781305585126Author:N. Gregory MankiwPublisher:Cengage Learning
Managerial Economics: A Problem Solving ApproachEconomicsISBN:9781337106665Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike ShorPublisher:Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-...EconomicsISBN:9781259290619Author:Michael Baye, Jeff PrincePublisher:McGraw-Hill Education
Principles of Economics (12th Edition)
Economics
ISBN:9780134078779
Author:Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:PEARSON
Engineering Economy (17th Edition)
Economics
ISBN:9780134870069
Author:William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:PEARSON
Principles of Economics (MindTap Course List)
Economics
ISBN:9781305585126
Author:N. Gregory Mankiw
Publisher:Cengage Learning
Managerial Economics: A Problem Solving Approach
Economics
ISBN:9781337106665
Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor
Publisher:Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-...
Economics
ISBN:9781259290619
Author:Michael Baye, Jeff Prince
Publisher:McGraw-Hill Education