- Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about ? On this page you'll find 128 study documents about .
Exam (elaborations)
STA 210 EXAM 1 QUESTIONS WITH ACCURATE ANSWERS
Causation correct answer indicates that one event is the result of the occurrence of the other event; i.e. there is a causal relationship between the two events. This is also referred to as cause and effect. Confounding correct answer An extraneous variable in a statistical model that correlates (directly or inversely) with both the dependent variable and the independent variable. Correlation Coefficient (r) correct answer -A numerical way of summarizing the association between two variabl...
starwid
Exam (elaborations)
CPH 350 FINAL EXAM QUESTIONS WITH ACCURATE ANSWERS
10 essential services correct answer monitor health diagnose and investigate inform educate empower mobilize community partnerships develop policies enforce laws link to services assure competent work force evaluate research 3 core functions of public health correct answer assurance, assessment policy development AHRQ correct answer agency for healthcare research and quality, systems, quality , cost, effectiveness, support research to help improve the quality of healthcare(health...
starwid
Exam (elaborations)
COHP 350 QUIZ WITH ACCURATE ANSWERS
categorical (qualitative) data correct answer consists of names or labels that are not numbers Census correct answer The collection of data from every member of the population Cluster sampling correct answer A method for selecting a random sample and dividing the population into groups (clusters) Confounding correct answer (non-sampling error) Multiple factors which contribute to a particular outcome Continuous quantitative data correct answer the outcomes are measured - decimals ...
starwid
Exam (elaborations)
PSY 420M Practice for Quiz 2 Questions with Accurate Answers
"Rarity", when expressed as a probability given a hypothesis, is called a correct answer p-value A normal distribution is completely described by correct answer its mean and standard deviation A p- value is the probability that correct answer you would get a mean or score at least as big as yours, given the null hypothesis. A sample mean will almost always equal the True mean. True or False? correct answer False A sample of 20 observations (n = 20) would be considered a "sma...
starwid
Exam (elaborations)
RMI 300: Exam 2 Questions with Accurate Answers
actual cash value correct answer replacement cost new - the depreciation on lost property actuary correct answer what pricing should be for categories adhesion correct answer must adhere to contract as written by the insurance company adverse selection correct answer tendency of buyers with higher than average expected losses to buy more coverage than buyers with lower than average expected losses when charged the same premium agent correct answer work for company as the number of...
starwid
Exam (elaborations)
STATS Quizzes And Chapters 1-3 Questions With Accurate Answers
___________% of the data are less than the median. correct answer 50% 2) ____% of the data are less than the median. correct answer 50% 3. The distribution of bladder volume in men is approximately Normal with mean 550 ml and standard deviation 100 ml. What percent of men have a bladder volume smaller than 450 ml? Round you answer to the nearest whole number. correct answer (16 and) 450 ml is one standard deviation below the mean. We expect about 68% of all men to have bladder volumes with...
starwid
Exam (elaborations)
STATS Z-SCORES QUESTIONS WITH ACCURATE ANSWERS
A population has μ = 50. What value of σ would make X = 55 an extreme score in this population? correct answer σ = 1 A population with μ = 100 and σ = 20 is transformed into z-scores. The resulting distribution of z-scores will have a mean of zero. correct answer True A population with μ = 37 and σ = 6 is standardized to create a new distribution with μ = 100 and σ = 10. In this transformation, a score of X = 40 from the original distribution will be transformed into a score of X ...
starwid
Exam (elaborations)
CHAPTER 6 QUESTIONS WITH ACCURATE ANSWERS
______ is sometimes used in stratified random sampling when no single source can generate a large or low incidence sample. correct answer Multisource sampling _______ refers to the selection of a small number of elements from a larger defined target group of elements and expecting that the information gathered from the small group will allow judgments to be made about the larger correct answer sampling A list of all eligible sampling units that are developed by a researcher is called a(n)...
starwid
Exam (elaborations)
EXAM 3 SET BUSINESS STATS QUESTIONS WITH ACCURATE ANSWERS
___________ ⎷p(1-p)/n correct answer That is, if the population is finite with n/N ≤ .05, we will use ________________. - theorem applies additional information to revise probabilities correct answer Bayes' (T/F) The means (x-bar s) of 98% of samples will always be within the confidence interval [x-bar-2.33(s/√N)]<u<[x-bar + 2.33(s/√N)] correct answer False (T/F) The means x-bar s of 98% of samples will always be within the probability interval [u-2.33(s/√N)] to [u+2...
starwid
Exam (elaborations)
COHP 350 Final Exam Questions with Accurate Answers
_______________ tests the differences between three or more different group's means, but can never conclude that any particular mean is different from the others correct answer one way ANOVA _________________ is the algebraic relationship between two variables correct answer regression _________________ tests the difference between an actual sample and another hypothetical distribution correct answer chi squared __________________ is the difference between the original data points an...
starwid
Exam (elaborations)
Analytics Chapter 13 Final Exam Questions With Accurate Answers
5 steps in optimization correct answer -identify the objective function -Define decision variables -Identify all constraints -Write the objective function and constraints as mathematical equations (expressions) -run the optimization model, obtain the result and use it as data driven insight to help make a decision 6 prescriptive analytic techniques correct answer -what if analysis? -Sensitivity analysis -scenario analysis -Goal seek analysis -Cash flow analysis -Optimization A gr...
starwid
Exam (elaborations)
BCOMM Research Questions with Accurate Answers
________ is primary data that could be collected to prepare an annual fiscal report for a company. correct answer financial information ________ would be the best primary sources to consult when preparing a presentation about how the company culture has changed and evolved over time. correct answer Historical documents and communications Adena was tasked to write a proposal suggesting ways to improve the sales at her store. As soon as she was given this task, she began researching ways oth...
starwid
Exam (elaborations)
Discrete Probability Distributions HW Questions with Accurate Answers
A die is rolled. If it rolls a 1, 2, or 3, you win $2. If it rolls to a 4, 5, or 6, you lose $1. Calculate the expected winnings. correct answer $0.50 A discrete random variable correct answer can be treated as continuous when it has a large range of values A fair die is rolled. If it comes up 1 or 2 you win $2. If it comes up 3, 4, 5, or 6, you lose $1. Calculate the expected winnings. correct answer $0.00 A random variable is binomially distributed with n = 16 and π = .40. The expect...
starwid
Exam (elaborations)
Quizzes 1-12 Marketing Research Questions with Accurate Answers
_____ indicates how probable it is that if a study were replicated the same results would be found. Confidence level Margin of error Standard deviation Systematic sampling correct answer Confidence level _____ is expressed as a percent range indicating how much a statistic can fluctuate in the true population. Confidence level Margin of error Standard deviation Systematic sampling correct answer Margin of error ______ is the fastest method of survey data collection. Results are ins...
starwid
Exam (elaborations)
Statistics - Exam 3 Questions with Accurate Answers
Between vs. Within - Subjects Design --- which statistic to use for hypothesis testing? correct answer Between-Subjects Design, aka independent-measures research design = use independent-samples t test Within-Subjects Design, aka repeated-measures research design, or other non-independent group designs (groups are not distinct from one another) = use related-samples t test (aka t test for correlated groups) Define confidence interval. correct answer A confidence interval is a range of valu...
starwid
Exam (elaborations)
STATS 3 QUESTIONS WITH ACCURATE ANSWERS
A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. If α = .05, what is the critical t value? correct answer ±2.447 H0: µ = 6.6; H1: µ ≠ 6.6. The t critical values for a two-tailed test at the 0.05 significance level with n − 1, or 6 degrees of freedom are ±2.447. A hypothesis regarding the ...
starwid
Exam (elaborations)
Chapter 10 SB Questions with Accurate Answers
______ theory is the personality approach that seeks to identify the basic elements necessary to describe personality. correct answer Trait ________ learning involves learning by noting the consequences of other people's behavior. correct answer Observational _________ conflict is when a child focuses attention on his or her genitals, and has sexual interest in his or her opposite-sex parent. correct answer Oedipal __________ learning involves learning by noting the consequences of o...
starwid
Exam (elaborations)
QBA Stone CHP 8 Questions with Accurate Answers
A 95% confidence interval for a population mean is determined to be 100 to 120. If the confidence coefficient is reduced to 0.90, the interval for μ? correct answer becomes narrower A machine that produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced would be defective. With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is? correct answer 217 A population has a standard deviation ...
starwid
Exam (elaborations)
FINANCE 208 HOMEWORK 4 QUESTIONS WITH ACCURATE ANSWERS
A 99% confidence interval estimate can be interpreted to mean that I. if all possible samples of size n are taken and confidence interval estimates are developed, 99% of them would include the true population mean somewhere within their interval. II. we have 99% confidence that we have selected a sample whose interval does include the population mean. correct answer I and II A confidence interval was used to estimate the proportion of statistics students who are female. A random sample of 72 ...
starwid
Exam (elaborations)
CHP 11-15 QUIZZES WITH ACCURATE ANSWERS
_____ is the component of emotions that refers to the increase in probabilities of certain behaviors. correct answer Action tendency _____ popularized the term "identity" in the 1960s. correct answer Erik Erikson A person who recalls factual information in response to a new event is engaging in: correct answer objectifying cognition. A person who relates a new event to past experiences from his or her own life is engaging in: correct answer personalizing cognition. A study by W...
starwid