2661 Words11 Pages

Chapter 3
Standard units tell you how many standard deviations above or below average a data value is standard units = (actual value – average)/SD actual value = average + (SD x standard units). Standard units are denoted by Z.
Chapter 8
Complement rule: P(A) = 1 – P(A doesn 't happen)
Multiplication rule:
P(A and B both happen) = P(A) x P(B given A happened)
Q. 5 random components removed one at a time from box containing 5 defective and twenty working. What is chance of selecting all defective:
A. 5/25x4/24x3/23x2/22x1/21. Selecting no defective 1 minus chance of selecting all defective or 20/25 x 19/24 x 18/23 x 17/22 x 16/21 = 2/7 or 29%
Q. Important data server breaks down 40% of the time, is operational the other 60%, and*…show more content…*

Q. Certify less than 5% have errors. 10m per entry. How long to est. % of entries having errors using random sample big enough to get MOE less than 2%. A. SE for % = Sqrt ((True %)(100%-True %)/(Size of Sample)) Margin of error = 2% so Standard Error = 1% 1% = Sqrt ((5%)(100%-%%)/(Size of Sample) Size of the Sample = (5%*95%)/(.01^2) Size of the Sample = 475 Samples At 10 minutes each, 475 Samples = 4750 Minutes = 3.3 Days Q. Ave sample size = 20oz. Random sample of 100 boxes, finds ave = 22oz per box, unsusual? A. Yes, this sample average is unusually high, as the Standard Error for the Average is only .2, which means the margin of error is .4. We would reasonably expect (95% confidence) .4 to be the largest distance between the sample average (22) and the population average (20). 2/sqrt (100) = 10 SE 's above the average, which is very unusual. Q. 80% who book show up. 85 room capacity. Makes 100 reservations. Is it likely there will be enough room? A. SE = Square Root of [80 x (100-80) / 100] = 4. Given a margin of error of 8, the number of rooms needed could be between 72 and 88, therefore 85 hotel rooms may not be enough for the people who show up. Chapter 10 Central Limit Theorem: w/ reasonably large sample size you can use the Normal curve to est. the chance a sample average is within some desired number of SEs from pop average. SD = SE of sample average (by SE formula/rule). Confidence Interval: Interpretation: We are 95% confident the

Q. Certify less than 5% have errors. 10m per entry. How long to est. % of entries having errors using random sample big enough to get MOE less than 2%. A. SE for % = Sqrt ((True %)(100%-True %)/(Size of Sample)) Margin of error = 2% so Standard Error = 1% 1% = Sqrt ((5%)(100%-%%)/(Size of Sample) Size of the Sample = (5%*95%)/(.01^2) Size of the Sample = 475 Samples At 10 minutes each, 475 Samples = 4750 Minutes = 3.3 Days Q. Ave sample size = 20oz. Random sample of 100 boxes, finds ave = 22oz per box, unsusual? A. Yes, this sample average is unusually high, as the Standard Error for the Average is only .2, which means the margin of error is .4. We would reasonably expect (95% confidence) .4 to be the largest distance between the sample average (22) and the population average (20). 2/sqrt (100) = 10 SE 's above the average, which is very unusual. Q. 80% who book show up. 85 room capacity. Makes 100 reservations. Is it likely there will be enough room? A. SE = Square Root of [80 x (100-80) / 100] = 4. Given a margin of error of 8, the number of rooms needed could be between 72 and 88, therefore 85 hotel rooms may not be enough for the people who show up. Chapter 10 Central Limit Theorem: w/ reasonably large sample size you can use the Normal curve to est. the chance a sample average is within some desired number of SEs from pop average. SD = SE of sample average (by SE formula/rule). Confidence Interval: Interpretation: We are 95% confident the

Related

## Your Best Content Doesn’T Have To Live Only Once. If You

1139 Words | 5 PagesAnn Smarty 2. eBooks and PDF’s Like with presentations, you can always re-package your content into PDF’s to let users download it and view on iPad, share with friends and save locally for further reference: Re-organize your tips into one-page cheat sheet; Re-arrange your article to create a mini eBook; Interview a few really prominent people on the topic of your post and collect the interview into an eBook; Collect related statistics to create a white paper. Best tool to promote: SCRIBD HEAVY FACEBOOK

## Bye Week Research Paper

530 Words | 3 Pagescan make or break your probabilities of winning. Don’t choose players that have the same bye week because you may restrict your selections for plays and points. Be sure your roster has players in as many different bye weeks as possible. Cheat Sheet You

## Is Cheating At School Getting Out Of Control?

872 Words | 4 Pagesexcuses for his actions, he knew that he was going to fail the test tomorrow. “There is only one way right now,” Joe said in determination. He started cutting out small pieces of paper and wrote down formulas in tiny handwriting. Yes, he is going to cheat. Cheating has become a serious and growing problem in school nowadays, especially in high schools. According to a survey in 1998, of 20,829 middle and high school students conducted by the Josephson Institute of Ethics, 70% of high school students

## Digital Age For Teachers And Administrators

1331 Words | 6 PagesSeventy three percent of American teenagers and young adults own a smart phone, and eighty seven percent own a laptop (Sussman). Are these surprising statistics effecting high schools and colleges? Ever since 1992 when the first smart phone was made, these electronics have completely changed American’s lives and the way they live. Another big part of teenagers and young adults lives is high school or college. Yes, technology has effected schools and the way they work and how people learn, and not

## The Government Has Changed Society

943 Words | 4 PagesTheresse Weigand-Watkinson Bethany Gallant and Stacy Vocasek English 10-5 16 December 2015 The Positive Government Did you know that the government has helped over 306,804,000 (Jeffrey) people and families just from the last four years alone? Since 1789, the government has been finding ways to try and help citizens deal with poverty and other economic crisis’. From creating the Constitution and abolishing slavery, the government has started to create programs to help certain people and families

## Ethics : Ethics And The Law

1660 Words | 7 Pages1. ETHICS Ethics refer to “the principles, standard and norms of conducts governing individual and firm behavior” (Peng & Meyer 2011, p82). These principles entail that both individual and firms are to take full accountability of their behaviors and to conform to established principles and values (Thorne, Ferrell & Ferell 2008, p167). This definition will probably raise the concern if there is any distinction between ethics and the law. It is argued that to the degree that law mirrors a society’s

## Using Microsoft Word Of The Core Curriculum For Students Essay

1723 Words | 7 Pagesfor anyone to contact Kotuku Surf Lifesaving and also the primary email that SLSNZ uses to contact us with. EVALUATION OF BYOD WITHIN JOHN PAUL II HIGH SCHOOL As explained in the overview BYOD (Bring your own devices) and BYOB (Bring your own Browser) are brand new information systems for sharing information within JPII. It introduces more electronic learning/teaching methods and the possibility for more digital based assessments. What we need to think about is how this will be managed and how it

## Statistics Cheat Sheet

1965 Words | 8 PagesStatistics Cheat Sheet Proportion = Frequency x 100 = Percentage Total No | Z score (standardised value)-how many sds from the mean the value liesZ score = data value – mean Standard deviation | Metric Data = ExploreCategory = Frequencies | Bigger sample size will give a narrower confidence interval range (more specific) outliers affect the mean but not the median – this is why the median is preferred here.mean | | Reports -Only give confidence

## Personal Statement : My Career Goals

2125 Words | 9 Pagesreach 45 billion U.S. dollars by 2015. The marketing of athletes is on a steady incline growing rapidly day-by-day. Statista also states that, the total North American sponsorship market is projected to grow by 5.5 percent in 2013. Looking at these stats I feel very comfortable in being able to get in the field and leave my mark. With technology becoming so important, one must

## Mathopoly Bagatelle an Alternative Instructional Tool in Teaching Mathematics

4732 Words | 19 PagesMathopoly Bagatelle an Alternative Instructional Tool in Teaching Mathematics Submitted as an entry for the Division Math Fair: Karyl S. Cabanos Maricar Bianca V. Juen Raymond P. Loreto Ben Jasper C. Castro Researchers Grace N. Alburo Lilibeth F. Aguilar Advisers Agusan del Sur National High School Brgy. 5, San Francisco, Agusan del Sur Table of Contents Abstract i Acknowledgement ii Table of Contents iii Definition of Key Terms

### Your Best Content Doesn’T Have To Live Only Once. If You

1139 Words | 5 Pages### Bye Week Research Paper

530 Words | 3 Pages### Is Cheating At School Getting Out Of Control?

872 Words | 4 Pages### Digital Age For Teachers And Administrators

1331 Words | 6 Pages### The Government Has Changed Society

943 Words | 4 Pages### Ethics : Ethics And The Law

1660 Words | 7 Pages### Using Microsoft Word Of The Core Curriculum For Students Essay

1723 Words | 7 Pages### Statistics Cheat Sheet

1965 Words | 8 Pages### Personal Statement : My Career Goals

2125 Words | 9 Pages### Mathopoly Bagatelle an Alternative Instructional Tool in Teaching Mathematics

4732 Words | 19 Pages

- Bandon Group: A Family Owned Office Equipment Business
- Use of Technology for Long-Term Growth and Business Sustainability
- Compare and Contrast the Budget Cycle Between Presidential System and Parliamentary Democracy System
- Patterns of Management Theory
- Managerial Economics Assignments
- Case Study Nordstrom: How to Succeed by Selling Just One Shoe by Allen White