3. Who do you think is more outgoing, first-born or later-born siblings? Roher andcolleagues (2015) used three nationally-based data sets from the United States, GreatBritain and Germany to understand the relation between a person's birth order positionand his or her level of extroversion. All participants came from families with threechildren and each child was given a measure of extroversion (higher scores indicategreater extroversion). Assume a = .05 and Tukey HSD = 8.3.FirstM = 61Sibling birth orderSecondM = 50a. Complete the conclusion below.ThirdM = 52The one factor ANOVA indicated a significant main effect of birth order, F (2, 297) =2.67, p<.05.b. How many families were sampled?

Anova is the mean significance between the three or more groups. It explain the variation occur…

Answered: 3. Who do you think is more outgoing,…

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 scientific study was conducted to determine the hours of sleep that college students get per night. The study surveyed 20 college students and obtained the following data:8, 8.3, 7.8, 7.7, 8.6, 8.1, 7.7, 8.5, 8.1, 8.2, 8.2, 7.9, 8.5, 7.9, 8.3, 8.2, 7.8, 7.8, 7.8, 7.7Assuming the population standard deviation is σ=0.31σ=0.31, construct a 86% confidence interval for the average hours of sleep per night that college students get.xˉ=x̄=α2=α2=zα2=zα2=Margin of Error: E=E=We are 86% confident that college students get an average of between hours and hours of sleep per night. Submit QuestionQuestion
The Economist collects data each year on the price of a Big Mac in various countries around the world. The price of a Big Mac for a sample of McDonalds restaurants in Europe in May 2009 resulted in the following Big Mac prices (after conversion to U.S. dollars):3.80 5.89 4.92 3.88 2.65 5.57 6.39 3.24The mean price of a Big Mac in the U.S. in May 2009 was $3.57. For purposes of this exercise, assume it is reasonable to regard the sample as representative of European McDonalds restaurants. Does the sample provide convincing evidence that the mean May 2009 price of a Big Mac in Europe is greater than the reported U.S. price? Test the relevant hypotheses using a = .05. Assume a normal distribution of the data. x = Ho: μ = Ha: Select an answer α= P-value = |: S= Based on the above we choose Question Help: Post to foru Submit Question (Put in the correct symbol and value) ✓ Select an answer Reject the null hypothesis Fail to reject the null hypothesis
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he Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there are differences in the amount of computer anxiety experienced by students with different majors. They found the following: Major n Mean Marketing 19 44.37 Management 11 43.18 Other 14 42.21 Finance 45 41.80 Accountancy 36 37.56 MIS 47 32.21 (A) Complte the following ANOVA table: Source of Variation SS df MS F-ratio F-crit Between groups 3172 5 634.4 4.9567 2.2685 Within groups 21246 166 127.988 Total 24418 171 (A) At the 0.05 level of significance, is there evidence of a difference in the mean computer anxiety…
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The mean birthweight of an infant is thought to be associated with the smoking status of the mother during the first trimester of the pregnancy. Consider the following data from mothers divided into four categories according to smoking habits, and the corresponding birthweights of their children. Group 1: Mother is a non smoker (NON): 7.5, 6.2, 6.9, 7.4, 9.2, 8.3, 7.6 Group 2: Mother is an ex-smoker (EX): 5.8, 7.3, 8.2, 7.1, 7.8 Group 3: Mother is a current smoker, smokes less than 1 pack per day (CUR < 1) 5.9, 6.2, 5.8, 4.7, 8.3, 7.2, 6.2 Group 4: Mother is a current smoker, smokes more than or equal to 1 pack per day (Cur ≥ 1) 6.2, 6.8, 5.7, 4.9, 6.2, 7.1, 5.8, 5.4 Using Stata test whether or not the mean birthweights are equal across all four groups at the alpha = 0.05 level. What is the corresponding p-value? O 0.0284 0.0137 O 0.05 O 0.737
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