EBK RESEARCH METHODS FOR THE BEHAVIORAL
6th Edition
ISBN: 8220106720271
Author: Forzano
Publisher: YUZU
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Chapter 5, Problem 7E
Under what circumstances is a proportionate stratified random sample preferred to a simple random sample?
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a small pond contains eight catfish and six bluegill. If seven fish are caught at random, what is the probability that exactly five catfish have been caught?
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Chapter 5 Solutions
EBK RESEARCH METHODS FOR THE BEHAVIORAL
Ch. 5.1 - Describe the relationship between a sample and the...Ch. 5.1 - Explain the basic distinction between probability...Ch. 5.2 - Describe the process of simple random sampling,...Ch. 5.2 - Describe the four probability sampling methods...Ch. 5.3 - Describe the process of convenience sampling,...Ch. 5.3 - Describe quota sampling, recognize examples of...Ch. 5 - In addition to the key words, you should also be...Ch. 5 - A researcher conducting a political poll for a...Ch. 5 - A researcher studying cyberbullying among...Ch. 5 - If a researcher selects a sample from each of the...
Ch. 5 - Explain how a researcher using simple random...Ch. 5 - Under what circumstances is a stratified random...Ch. 5 - Under what circumstances is a proportionate...Ch. 5 - Explain the advantages and disadvantages of a...Ch. 5 - Describe the advantages and disadvantages of...Ch. 5 - For each of the following scenarios, identify...Ch. 5 - Explain how the nonprobability technique of quota...
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- F Make a box plot from the five-number summary: 100, 105, 120, 135, 140. harrow_forward14 Is the standard deviation affected by skewed data? If so, how? foldarrow_forwardFrequency 15 Suppose that your friend believes his gambling partner plays with a loaded die (not fair). He shows you a graph of the outcomes of the games played with this die (see the following figure). Based on this graph, do you agree with this person? Why or why not? 65 Single Die Outcomes: Graph 1 60 55 50 45 40 1 2 3 4 Outcome 55 6arrow_forward
- lie y H 16 The first month's telephone bills for new customers of a certain phone company are shown in the following figure. The histogram showing the bills is misleading, however. Explain why, and suggest a solution. Frequency 140 120 100 80 60 40 20 0 0 20 40 60 80 Telephone Bill ($) 100 120arrow_forward25 ptical rule applies because t Does the empirical rule apply to the data set shown in the following figure? Explain. 2 6 5 Frequency 3 сл 2 1 0 2 4 6 8 00arrow_forward24 Line graphs typically connect the dots that represent the data values over time. If the time increments between the dots are large, explain why the line graph can be somewhat misleading.arrow_forward
- 17 Make a box plot from the five-number summary: 3, 4, 7, 16, 17. 992) waarrow_forward12 10 - 8 6 4 29 0 Interpret the shape, center and spread of the following box plot. brill smo slob.nl bagharrow_forwardSuppose that a driver's test has a mean score of 7 (out of 10 points) and standard deviation 0.5. a. Explain why you can reasonably assume that the data set of the test scores is mound-shaped. b. For the drivers taking this particular test, where should 68 percent of them score? c. Where should 95 percent of them score? d. Where should 99.7 percent of them score? Sarrow_forward
- 13 Can the mean of a data set be higher than most of the values in the set? If so, how? Can the median of a set be higher than most of the values? If so, how? srit to estaarrow_forwardA random variable X takes values 0 and 1 with probabilities q and p, respectively, with q+p=1. find the moment generating function of X and show that all the moments about the origin equal p. (Note- Please include as much detailed solution/steps in the solution to understand, Thank you!)arrow_forward1 (Expected Shortfall) Suppose the price of an asset Pt follows a normal random walk, i.e., Pt = Po+r₁ + ... + rt with r₁, r2,... being IID N(μ, o²). Po+r1+. ⚫ Suppose the VaR of rt is VaRq(rt) at level q, find the VaR of the price in T days, i.e., VaRq(Pt – Pt–T). - • If ESq(rt) = A, find ES₁(Pt – Pt–T).arrow_forward
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