Suppose random selection is used to recruit 15 classmates to participate in a research study that has threelevels of the independent variable (IV). During the random selection process, an online random numbergenerator generates the following string of digits:22021220 2221010Based on this output, how many participants would be assigned to the third level of the independentvariable?8Need help on this question?Read the ebook page on this topicGet a hintShow answer3.

From the given information, the independent variable has three levels. Let us denote the levels…

Answered: Suppose random selection is used to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A bag of candy contains 5 different types of colored candies; red, green, blue, yellow, and orange. According to the manufacturer, bags should contain an equal number of each color. Students in a statistics class decided to use a chi-square procedure to test the manufacturer’s claim. They opened a bag of candy and recorded the number of candies of each color. The results are shown in the following table. Red Green Blue Yellow Orange 17 24 20 25 14 Which color contributes most to the chi-square test statistic? Red A Green B Blue C Yellow D Orange
3 dices are rolled together. If X is the random variable for the sum of the results of the 3 dices, how many possible values does the random variable X contain?
Answer question 88
College entrance exams have a large effect on which university a student will attend once they graduate from high school; thus, there are many college preparatory exam companies claiming they can significantly increase a student’s ACT score. Nine college students who have already taken the ACT were randomly selected to participate in a college preparatory exam course. Their scores on the ACT before and after the preparatory course are given in the table below. Before: 26, 24, 20, 25, 21, 26, 18, 23, 27 After: 24, 24, 21, 25, 21, 28, 19, 25, 29 Hypothesis test needed After:
According to the financial reports by Snapchat, the average daily user of Snapchat created 19 messages, or "snaps," per day in Q3 2017. A college student wants to find out if the number of Snapchat messages has changed since Q3 2017 and creates a random sample using information from students on her campus for the current semester, with the accompanying results.
This semester, we have talked about creating random samples as well as desirable qualities of random samples. Other than randomness, one quality of random samples that we have talked about is representation. Using your knowledge of that concept, consider this problem. At a college, 29% of the students are in their first year, 27% are in their second year, 25% in their third, and 19% in their fourth. You take a survey of students and when you classify them by year of study, you have 49, 70, 56, and 25 students in their first, second, third, and fourth years respectively. The table below highlights this information. Year of School First Second Third Fourth Total College Percents Sample Counts Expected Counts 27% 70 25% 56 29% 19% 49 25 200 58 54 50 38 Under the assumption that we think the college enrollment percentages should match our sample, and that therefore our sample represents the college: a) What would the critical value be? (use a = 0.05) b) Find the test statistic to test (c)…
Researchers wish to study the effect of daily brain teasers on a person's intelligence. The researchers randomly choose 20 students from their local college campus. Day one of the test, every student is given an IQ test. The students are then randomly divided into Group A and Group B (10 students each). Group A is given daily brain teasers, while Group B were not instructed to participate in anything outside their normal routine. At the end of a 30 day period, each member of the group takes an IQ test. The students are aware of what group they are in, but the researchers have no idea until the results are given. The test given to Group A would be considered the Control Treatment Variable Placebo
For its "music 360 "survey, nielsen co asked teenagers and adults how each group has listened to music in the past 12 months. Nearly two thirds of U.s teenagers under the age of 18 say they use google inc's video sharing site to listen to music and 35% of the teenagers said they use pandora media Inc's custom online radio service( the wall street journal, august 14, 2012). Suppose 10 teenagers are selected randomly to be interviewed about how they listen to music.a. is randomly selecting 10 teenagers and asking whether or not they use pandora media inc's online service a binomial experiment?b. what is the probability that none of the 10 teenagers use pandora media inc, online radio service?c. what is the proabbility that 4 out of the 10 teenagers use pandora media inc online radio service?d. what is the probability that at least 2 of the 10 use pandora media online radio service?
A researcher is comparing the effectiveness of three devices designed to help people who snore. There are 120 people who snore participating in the experiment. Using a table of random digits, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison. How many unique random numbers need to be selected from the table of random digits? 3 40 80 120
A researcher uses an anonymous survey to investigate the study habits of American college students. The entire group of American college students is an example of a(n)
Numbers are given in this order: Observed count, expected count, contribution to chi square Find out the missing contribution to chi square for drug C, did not improve. Give a numeric answer to three decimal places

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