Cohp 350 - Study guides, Class notes & Summaries

COHP 350 Final Exam Review Questions And Answers What was the purpose of William Goset creating the "student" t-distribution, which is the main difference from the z-normal distribution? ANS t-distribution was used for smaller sample sizes A 95 percent confidence interval is that range of values around a sample mean that has a 0.95 probability of containing the true population mean. ANS True The U.S. Census Bureau conducts a study to determine the time needed to complete the short for...

COHP 350 Final Questions And Answers With Verified Solutions A misrepresentation of an association between a sample and its indertial target populations. Typically due to using too small of a sample size. The larger the sample size, the higher potential for an accurate representation of the population. ANS Sample Bias Choosing a random sample by dividing the population into groups, and then selecting a subset of groups ANS Cluster Sampling A quick and convenient way to select a random s...

COHP 350 Final Exam Questions And Answers Complete Solution A study was done to determine the age, number of times per week, and the duration residents uses a local park in Grand Rapids. The first house in the neighborhood around the park was selected randomly and then every eight houses in the neighborhoods around the park was interviewed. The population is? a. all of the residents of the first house only that use the park in GR b. all of the residents in all of the houses in the neighborho...

COHP 350 Quiz 2 Questions And Answers With Verified Solutions

COHP 350 Final Questions And Answers 2024 Study Solutions

COHP 350 Quiz 1 Study Set Questions And Answers What is the difference between Descriptive and Inferential Statistics? Give an example for each. ANS Descriptive: Organizes and summarizes data. i.e. mean, mode, pie chart Inferential: Drawing conclusions based upon the data. i.e. probability, hypotheses testing, confidence levels. Identify the sample and the population of the following: A cardiologist in Grand Rapids is interested in the mean recovery time of her patients who have had bypa...

COHP 350 Quiz 3 Questions And Answers With Verified Quizzes What are the discrete random variable probability distributions? ANS binomial, geometric, hypergeometric, and poison. What are the continuous variable probability distributions? ANS Uniform, Exponential, normal, and standard normal. What are the basic characteristics of discrete probability distributions? ANS - Each characteristics is between zero and one, inclusive. - The sum of the probabilities is one. What are the bas...

COHP 350 Final Exam Questions And Answers With Verified Solutions Organizing and summarizing data is ______________, whereas drawing conclusions about a population from good data is ______________. ANS descriptive statistics, inferential statistics A(n) _____________ is a number that is a property of a population, whereas a ______________ is a number that represents a property of the sample. ANS parameter, statistic Statistic is to ____________ as parameter is to ____________. ANS samp...

COHP 350 Quiz 6 Verified Study Questions And Answers Chi Squared used for ANS Finding relationships between two things When is a chi squared graph normal ANS When df>90 Goodness of Fit test ANS Used to see if a population with an unknown distribution fits a known distribution -Single question or outcome that you're looking for Goodness of fit hypotheses questions ANS Ho: Population fits given distribution Ha: Population does not fit given distribution

COHP 350 Quiz 4 Questions And Answers With Latest Quiz variables can be discrete or continuous. ANS random variable whole numbers ANS discrete all numbers (decimals) on continuum (measurement) ANS continuous a graph, table or formula that gives the probability for each value of the random variable ANS probability distribution