Randomly sampled - Study guides, Class notes & Summaries

stratified random sampling A form of probability sampling; a random sampling technique in which the researcher identifies particular demographic categories of interest and then randomly selects individuals within each category. Parameter A numerical characteristic of a population, such as a population mean μ, a population standard deviation σ, a population proportion p, and so on. Target Population The population for which statistical inferences such as point estimates are mad...

haphazard (convenience) sampling Answer selecting subjects on the basis of availability, and not with regard to having a representative sample of the population; nonprobability purposive sampling Answer a sample conducted to obtain predetermined types of individuals, nonprobability quota sampling Answer when the sample is chosen to reflect the numerical composition of various subgroups in the population; nonprobability stratified random sampling Answer a method in which a population is ...

Cluster sample - A multistage sample in which natural groups (clusters) are sampled initially, with the members of each selected group being subsampled afterward. For ex: you might select a sample of municipal police department from a directory, get lists of the police officers at all the selected departments then draw samples of officers from each. Quasi-experiment - A research design that includes most, but not all, elements of an experimental design. Quasi means "sort of", and a Quasi-...

ST 311 Final Exam | Questions and Answers (Complete Solutions) A researcher was interested in utilities provided by city governments. The researcher randomly selected 20 counties from a list of all counties in the U.S. From each of these counties the researcher then contacted each city in those counties (a total of 192) and found that 12 (6.25%) of them provided electricity to their residents. Which of the following are true? Select all that apply. -The population of interest is all city gover...

LAST KHAN EVER 2024 GUIDE WITH ACTUAL QUESTIONS AND ANSWERS VERIFIED 100%;(GUARANTEED SUCCESS) A city had an unemployment rate of 7%7%7, percent. The mayor pledged to lower this figure and supported programs to decrease unemployment Ans - H0:p=7% Ha:p<7% A newspaper report claims that 30%30%30, percent of all tea-drinkers prefer green tea to black tea. Leo is the office manager at a company with thousands of employees. Ans - ...equal to 30%30%30, percent. A quality control enginee...

Computer Science VERIFIED SOLUTIONS 2023/2024 What is a Natural Number and its Symbol? - ANSWER Positive Integer (N) What is a Real Number and its Symbol? - ANSWER Any number (R) What is an Integer and its Symbol? - ANSWER Any whole number (Z) What is a Rational Number and its Symbol? - ANSWER Can be represented in a Fraction (Q) What is a Ordinal Number? - ANSWER Position in a list What is a Cardinal Number? - ANSWER Size of list What is Absolute Error? - ANSWER Difference between a...

A sample that does not provide a good representation of the population from which it was collected is referred to as a(n)sample. - CORRECT ANSWER-Biased At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of I centimeter and a standard deviation of 0.1 centimeters. A random sample of 12 computer chips is taken. What is the probability that the sample mean will be between 0.99 and I .01 centimeters? - CORRECT ANSWER-0.2710 For air travel...

1) Before developing a hypothesis, a researcher should a. draw some conclusions. b. formulate a research question. c. test the hypothesis. d. conduct the experiment. Answer: b Diff: 3 Type: MC Page Reference: 34 Skill: Recall 2) From a scientific perspective, in order to understand a sexual behaviour, we must first be able to a. observe it directly. b. visualize it discreetly. c. dissect it. d. describe it. Answer: d Diff: 2 Type: MC Page Reference: 35 Skill: Recall ...

Putnam Investments of Boston offers a wide range of mutual funds through independent brokers. To gain a competitive advantage over other mutual fund companies, Putnam now provides brochures and prospectuses of their mutual funds to brokers within 24 hours of request. This is an example of - Responsiveness strategy An operations task performed at Hard Rock Café is - preparing employee schedules The five elements in the management process are - plan, organize, staff, lead, and control Which...

MAS-Full questions and answers 100% verified. The process of using sample statistics to draw conclusions about true population parameters is called - correct stical inference Which of the following is a continuous quantitative variable? - correct answers.The amount of milk produced by a cow in one 24-hour period A T.V. shows executives raised the fee for commercials following a report that the show received a No.1 rating in a survey of viewers. What type of the descrip...