1. Define null and alternate hypo2.statealpha3.Degreeoffreedom4.decisionrule5.test statistic 6.state the results 7.state conclusion To test if age and income are related, researchers collectedthe ages and yearly incomes of 10 individuals, shownbelow. Using alpha = 0.05, are they related?SubjectAgeYearlyIncome($)1815,0002.2529,0003.5768,0004.4552,0005.2632,0009.6480,0007.3741,0008.4045,0009.2426,000103333,000 WATCH THE VIDEO:1.Define the Null and Alternative Hypotheses:2.State the Alpha:3.Calculate the Degrees of Freedom:4.State the Decision Rule:Here is a diagram of our tablea=5%afone tailtwo tail0,991.000.900.810.730.670.620.580.950.883.0810.750.710670.630.600.580.530.53D546.1011120.520.500.480.46

Given that We have to test To test if age and income are related, researchers collected the ages…

Answered: . Define null and alternate hypo…

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) What are the Hypotheses (Be Specific) and what are the necessary pieces? B). Calculate test statistic and critical values
Please asssit with value for ****,*****, ****** and d ,e ,f
13
ANOVA constitutes a pairwise comparison. 1) True 2) False
Lan says that students’ favorite restaurants in Conway are not equally distributed between ZaZa’s, Umami, Mike’s Place, Brick and Forge, and The Pasta Grill. Nynaeve tests this claim by asking 40 students what their favorite restaurant is. Her survey results are 12 for ZaZa, 6 for Umami, 3 for Mike’s Place, 8 for Brick and Forge, and 11 for The Pasta Grill. Test the validity of Lan’s claim with a significance level of α = 0.05. [Hint: You are testing whether your data is a good fit against the presumption that all are equal.]
26.. a-true b-false
Bullying,” according to noted expert Dan Olweus, “poisons the educational environment and affects the learning of every child.” Bullying and victimization are evident as early as preschool, with the problem peaking in middle school. Suppose you are interested in the emotional well-being of not only the victims but also bystanders, bullies, and those who bully but who are also victims (bully-victims). You decide to measure anxiety in a group of bullies and a group of victims using an 18-item, 5-point anxiety scale. Assume scores on the anxiety scale are normally distributed and that the variances of the anxiety scores are the same among bullies and victims. The group of 23 bullies scored an average of 40.1 with a sample standard deviation of 10 on the anxiety scale. The group of 28 victims scored an average of 46.8 with a sample standard deviation of 11 on the same scale. You do not have any presupposed assumptions about whether bullies or victims will be more anxious, so you formulate…
13. Consider a town in which 90% of the taxis are blue and 10% are green. One night a taxi hits a pedestrian and speeds off. A witness says.that the taxi was green. The pedestrian sues the Green Cab Co. The court orders a test of the witness's nighttime color perception. The test reveals that the witness correctly identifies 70% of blue color samples and 80% of green color samples. If a juror were to employ the representativeness heuristic to estimate the probability that the cab is green, he would overestimate that probability by the amount (a) 9/10 (b) 33/70 (c) 4/7 (d) 8/35 (e) 10/21
1. Name your alternative and null hypotheses. b) Be sure and provide the mean for each group, standard error and significance levels. c) Write out a COMPETE statement as to and whether you accept or reject the null hypothesis. The federal government instituted a training program to help participants increase their monthly income. The Department’s inspector general wished to evaluate the program’s success or failure. Monthly income before the training program Monthly income after the training program 1363 1373 1482 1492 1579 1589 1643 1653 1752 1762 1848 1858 1927 1907 2055 2035 2143 2053 2237 2247 1752 1782 1752 1762 1643 1653 1848 1858 1752 1762
The average customer wait time at a QuickServe Restaurant chain is currently 8 minutes. The restaurant is considering implementing a new order processing system if sample data suggests it significantly decreases the average customer wait time. a) What is the Type I Error and what are the business consequences of a Type I Error? b) What is the Type II Error and what are the business consequences of a Type II Error? 1 allows
33. Researchers do not want to make a Type II error, because if their study has an effect, they want to be able to find it. Thus, they make their studies as powerful as they can. Of the following, the best way to increase the power of a study is to: a. raise the significance level used for the study. b. test a large sample. c. use inferential statistics. d. compute fewer statistical analyses. 34. By definition, mixed-methods research designs: a. include a number of quantitative measures of student performance. b. include both descriptive and inferential statistics in the analysis. c. include both relationship questions and difference questions in the same study. d. include both quantitative and qualitative data.
5. Researchers are investigating household-income level and whether the family owns their home or rents, in a particular city. They will consider the proportion of high-income households who own their home and the proportion of low-income households who own. They want to check whether the two categorical variables (income level and home-own-v.-rent) are related. Test at the 0.01 significance level.Table of number of households in each sub-category. Data Own Rent high-income 47 50 low-income 34 44 a) Identify the correct alternative hypothesis for this test. Household income level and home-ownership-v.-renting are independent. There is a relationship between household income level and home-ownership-v.-renting. There is no relationship between household income level and home-ownership-v.-renting. Household income level varies much more than home-ownership-v.-renting proportions. b) The χ2χ2test statistic value is: c) The P-value is: d) Based on this, we Reject H0H0 Do…

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. Define null and alternate hypo 2.statealpha 3.Degreeoffreedom 4.decisionrule 5.test statistic 6.state the results 7.state conclusion