Qnt 561 final exam – new

QNT 561 Final Exam - New

1.      The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon.
2.      What conditions must n satisfy to make the x2 test valid?
3.      To use the t-statistic to test for a difference between the means of two populations, what assumptions must be made about the two populations? About the two samples?
4.      Studies of managers from two countries in the 1970s found sharp differences of opinion toward quality management. To find out if these differences continue to exist, researchers surveyed 100 managers in each country in the electronics manufacturing industry. The accompanying table gives the percentages of managers from each country who agree with each of 10 randomly selected statements regarding quality. Complete parts a through c.
5.      Consider the horizandal box plot shown to the right.
6.      A random sample of 100 observations from a population with standard deviation 58 yielded a sample mean 111. Complete parts a through c.
7.      Graph the relative frequency histogram for the 300 measurements summarized in the relative frequency table to the right.
8.      Each month interviewrs visit about 69,000 of the 93 million households in the region and question the occupants over 18 years of age about their educational status. Their responses enable the interviewers to estimate the percentage of people in the labor force who are college educated. Complete parts a through c.
9.      School bullying is a form of aggressive behaviour that occurs when a student repeatedly to nagative actions from another student. In oredr to study the effectiveness of an antibullying policy at elementary schools, a survey of over 2,000 elementary school children was conducted. Each student was asked if he or she ever bullied another student. In a sample of 1358 boys, 745 claimed they had never bullied another student. In a sample of 1379 girls, 966 claimed they had never bullied another student. Complete parts a through f below.
10.  A study analyzes recent incidents involving terrorist attcks. Data on the number of individual suicide bombings that occurred in each of 20 sampled terrorist group attacks against a country is reproduced in the data table below. An EXCEL/DXL printout is shown to the right. Complete parts a through e.
11.  Educators are constantly evaluating the efficacy of public schools in the education and training of students. One quantitative assessment of change over time is the difference in scores on the SAT. The table below contains the average SAT scores for the years 1988 and 2005.
12.  Each child in a sample of 62 low-income was administrated a language and communication exam. The sentence complexity scores had a mean of 7.63 and a standard deviation of 8.92. Complete parts a through d.
13.  Suppose a consumer group rated 49 brands of toothpaste based on whether or not the brand carries an American Dental Association (ADA) seal verifying effective decay prevetion. The results of a hypothesis test for the proportion of brands with the seal are shown to the right. Complete parts a through c.
14.  A university conducted a study on 446 business graduates who had all completed the same business course. The study used correlation coefficients to investigate the relationship between many different business skills. Two of the many variable measured were self-knowledge skill level (x) and goalsetting ability (y). The correlation coefficient was r = 0.82. Complete parts a through c below.
15.  Reference from the doc file of mentioned r value
16.  Five banks have been ranked by the amount charged to credit and debit cards issued by the banks. The table to the right gives the total amount charged in 2007 for the top ranked banks.
17.  Which hypothesis, the null or the alternative, is the status-quo hypothesis?
18.  A study was done to examine whether the perception of service quality at hotels differd by gender. Hotel guests were randomly selected to rate service items on a 5-point scale. The sum of the items for each guest was determined and a summary of the guest scores are provided in the table. Complete parts a and b.
19.  Identify the problem(s) in the residual plots shown below.
20.  A university economist conducted a study of elementary school llunch menus. During the state-mandated testing period, school lunches averaged 873 calories. The economist claimed that after the testing period ended, the average caloric content of the school lunches increased significantly. Set up the null and alternative hypothesis to test the economist�s claim.
21.  Compare the z-scores to decide which of the x values below lie the greatest distance above the mean and the greatest distance below the mean.
22.  In one university, language professors incorporated a 10-week extensive reading program to improve students� Japanese reading comprehension. The professors collected 283 books written for Japanese children and required their students to read at least 40 of them as part of the grade in the course. The books were categorized into reading levels (color-coded for easy selection) according to length and complexity. Complete parts a through c.
23.  Researchers investigated the effect of tablet surface area to volume on the rate at which a drug is released in a controlled-release dosage. For six similarly shaped tablets with different weights and thicknesses, the diffusional drug release rate (percentage of drug released divided by the square root of time) was determined. The experimental data are listed in the table. Complete parts a through d.
24.  To determine if winning a certain award leads to a change in life expectancy, researchers sampled 748 award winners and matched each one with another person of the same sex who was in the same profession and was born in the same era. The lifespan of each pair was compared. Complete parts a through c below.
25.  Many entrepreneurs have donated money to various causes. Data on the total amount pledged and remaining net worth for the 10 top donors are given in the table. Complete parts a through d.
26.  When planning for a new forest road to be used for tree harvesting, planners must select the location to minimize tractor skidding distance. The skidding distances (in meters) were measured at 20 randomly selected road sites. The data are given below. A logger working on the road claims the mean skidding distance is atleast 413 meters. Is there sufficient evidence to refute this claim? Use ? = 0.10.
27.  Consider the pairs of measurements shown to the right.
28.  For the ? and observed significance level (p-value) pair, indicate whether the null hypothesis would be rejected.
29.  Researchers conducted a survey of a representative sample of over 1,000 drivers. Based on how often each driver engaged in road rage behaviour, a road score was given. The drivers were also grouped by annual income. The data were subjected to an analysis of variance, with the results summarized in the table.
There has been a recent trend for sports franchises in baseball, football, basketball and hockey to build new stadiums and ballparks in urban, downtown venues. A magazine investigated whether there has been a significant suburban-to-urban shift in the location of major sport facilities. In 1985 40% of all major sports facilities were located downtown, 30% in central city, and 30% in suburban areas. In contrast, of the 122 major sports franchises that existed in 1997, 65 were built downtown 28 in a central city, and 29 in a suburban area. Complete parts a through e.


Don't use plagiarized sources. Get Your Custom Essay on
Qnt 561 final exam – new
Just from $13/Page
Order Essay

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our Guarantees

At 111papers.com, we value all our customers, and for that, always strive to ensure that we deliver the best top-quality content that we can. All the processes, from writing, formatting, editing, and submission is 100% original and detail-oriented. With us, you are, therefore, always guaranteed quality work by certified and experienced writing professionals. We take pride in the university homework help services that we provide our customers.

Money-Back Guarantee

As the best homework help service in the world, 111 Papers ensures that all customers are completely satisfied with the finished product before disbursing payment. You are not obligated to pay for the final product if you aren’t 100% satisfied with the paper. We also provide a money-back guarantee if you don’t feel that your paper was written to your satisfaction. This guarantee is totally transparent and follows all the terms and conditions set by the company.

Read more

Zero-Plagiarism Guarantee

All products that we deliver are guaranteed to be 100% original. We check for unoriginality on all orders delivered by our writers using the most advanced anti-plagiarism programs in the market. We, therefore, guarantee that all products that we submit to you are 100% original. We have a zero-tolerance policy for copied content. Thanks to our strict no plagiarized work rule, you can submit your homework to your professor without worrying.

Read more

Free-Revision Policy

TThis is one of the most cherished courtesy services that we provide to help ensure that our customers are completely satisfied with our finished products. Delivering the best final product to our customers takes multiple inputs. 111papers.com prides itself on delivering the best university homework help services in the writing industry. And, in part, our free revision policy is how we do it. What’s more, all our revisions are 100% free without any strings attached.

Read more

Privacy Policy

Client privacy is important to use. We know and understand just how important customers value their privacy and always want to safeguard their personal information. Thus, all the information that you share with us will always remain in safe custody. We will never disclose your personal information to any third party or sell your details to anyone. 111 Papers uses the most sophisticated, top-of-the-line security programs to ensure that our customers’ information is safe and secured.

Read more

Fair-Cooperation Guarantee

Placing your order with us means that you agree with the homework help service we provide. We, in turn, will endear to ensure that we do everything we can to deliver the most comprehensive finished product as per your requirements. We will also count on your cooperation to help us deliver on this mandate. Yes, we also need you to ensure that you have the highest-quality paper.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages