1. Which chi square test would we use to answer the following question: do boys and girls(sampled separately, two separate groups) differ in their favorite color (blue or pink)?a. Goodness of fitb. Test of independencec. Homogeneityd. We would not use a chi square, we would use a t-teste. We would not use a chi square, we would use a correlation2. Consider the following contingency table of observed values. If employment status and degreeattainment are independent of each other, what value would we expect in the 'Unemployed-HSDegree' category?EmployedNoDegree17Unemployed 1229HSDegree101828CollegeDegree822303552873. Again referring to the contingency table above, conduct a test for independence of the'employment status' and 'degree attainment' variables. What is the test statistic, and do youaccept or reject the null hypothesis of independence? (just write Accept or Reject)

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Answered: 1. Which chi square test would we use…

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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1) Is the test significant? A. Unable to determine B. No, p = .448 C. Yes, p = <. 001 D. Yes, p = .448 2) In order to determine where the main mean differences lie, the researcher would also need to conduct a ____? A. Correlation B. MANOVA C. post-hoc analysis D. t-test
Use the attached table to answer the following: What is the dependent (response, outcome) variable? What is the independent (explanatory) variable? Describe the pattern of association between subjective class and satisfaction with financial situation.
A. For which data set is the sample correlation coefficient r closest to −1? B. For which data set is the sample correlation coefficient r closest to 0? C. For which data set is the sample correlation coefficient r equal to 1?
a) Work this problem manually (by hand) using the procedures and formulas for ANOVA to check if the Population Means for flying time before major maintenance is required are the same for the three types of aircraft. To help you, Sample Means and Sample Variances have been calculated below for you: Airbus Boeing737 Boeing 787 6.4 8.7 9.9 7.8 7.4 12.8 5.3 9.4 12.1 7.4 10.1 10.8 8.4 9.2 11.3 7.3 9.8 11.5 __________________________________________________________________ Sample Mean 7.1…
Five observations taken for two variables follow. xi 6 11 15 21 27 yi 6 9 5 18 12 a. compute the sample covarinace b. Compute the sample correlation coefficient. (Round your answer to three decimal places.)
a. Calculate the point biserial correlation coefficient. b. Test the significance of association using t test.
Which of these experiments sounds the most like it would be analyzed with an Independent-Samples t-test? A. A study that gives patients a placebo on Monday and measures their pain, then has them back on Friday and gives them a real pain pill and measures their pain B. A study that compares tennis players vs. football players on their peak heart rate while playing their sports C.A study that looks at the attention span of a group of n=30 5-year-olds and then follows up with those same kids when they are 10-years-old D. A study that measures the knowledge of the transfer process for a group of Chaffey students, both before and after they attend an orientation
To decide between using an independent-samples t test and a paired-samples t test, what question should the researcher ask? a. Is the goal to measure association or to make a prediction? b. Are there more than two levels of the independent variable? c. Is the population mean known? d. Is the research design between-groups or within-groups
A researcher believe that increasing attention given to children will improve academic performance. He invites parents to volunteer during school to help the children with their activities. At the end of the school year he compares the academic performance of these children with the mean and standard deviation of historical rate on academic achievement. Which statistic test is appropriate for this study and why? (By using the decision tree). A. Z test B. Single sample t test C. Two independent samples t test D. Two related samples t test E. One way between subjects ANOVA F. Correlation
1.) A researcher used the sample median as a measure of center instead of the sample mean. What do you think could have informed his decision and why? 2.) An investigator decided to conduct a research to describe the average number of females in each family. Considering the case of 200 families in the town. Describe what may contribute to the difference between the value of the sample statistics and its corresponding population parameter.
Shraddha Milan

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