Scenario: Gary GradStudent suspects that the average household size may have increased over timeas people increasingly struggle to make ends meet. Use the below output from the GSS to test hishypothesis.Group StatisticsGSS year for thisrespondentStd. ErrorMeanStd. DeviationMeanNumber of persons in198814812.621.406.037household201823482.351.334.028Independent Samples TestLevene's Test for Equality ofVariancest-test for Equality of Means95% Confidence Interval of theDifferenceMeanStd. ErrorFSig.tdfSig. (2-tailed)DifferenceDifferenceLowerUpperNumber of persons inEqual variances18.408.0005.9943827.000.271.045.182360householdassumedEqual variances not5.9233022.712.000271046181361assumedQuestion: Which of the following is the correct p-value for this test?0.0750.0450.0005.994

First we have to decide whether equal variance t test is used or unequal variance t test. Since…

Answered: : Which of the following is the correct…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A polling agency is interested in testing whether the proportion of women who support a female candidate for office is greater than the proportion of men. The null hypothesis is that there is no difference in the proportion of men and women who support the female candidate. The alternative hypothesis is that the proportion of women who support the female candidate is greater than the proportion of men. The test results in a p-value of 0.112. Which of the following is the best interpretation of the p-value? A. The p-value is the probability that women will support the female candidate. B. The p-value is the probability that men will support the female candidate. C. The p-value is the probability of getting a result that is as extreme as or more extreme than the one obtained, assuming that the proportion of women who support the female candidate is greater than the proportion of men. D. The p-value is the probability of getting a result that is as…
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Use SPSS for this Application Exercise: A health psychologist want to investigate whether there is a relationship between sex and food preference. The psychologist gave participants a questionnaire that asked which food the participants would choose to eat given the choice. What can be concluded with an a of 0.05? Food Sex spaghetti carrots donuts female 20 16 21 male 25 18 i. What is the appropriate test statistic? --Select- Compute the statistic selected in a): ii Obtain/compute the appropriate values to make a decision about Ho- p-value = Decision: -Select-- i Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = ]: Magnitude: -Select-- iv I Make an interpretation based on the results. O There is a significant negative relationship between sex and food preference. O There is a significant food preference difference between sex. O Food preference and sex are independent.
Q2: Which of the following is the correct mean for the given data: -2, -1, 0, 1,2 (A) 2 (B) 0 (C) 2.5 (D) None of the above
Below indicate whether the appropriate test would be an independent t-test, dependent t-test, One-way ANOVA, or z-test. A researcher wants to know if people find baby animals cuter than adult animals. All of the participants in a study are shown 10 pictures of baby animals and 10 pictures of adult animals. They are asked to rate (on a 1 to 10 scale) how cute they think each animal is.
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9.63 What is meant by the power of a test? 9.64 What is the difference between a one-tail test and a two-tail test? 9.65 What is meant by a p-value?
A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana should be illegal is less than 40%. A random sample of 400 US adults includes 144 that think marijuana should be illegal. The value of the test statistic is -1.63 Find the P-value of the hypothesis test
You want to compare differences in prior arrests across ethnicity in your study, you measured ethnicity as white =0 black =1 hispanic=2, and other =3. Prior arrests was recorded as the number of prior arrests. which test would you perform to see if arrests differ across diffrent ethnic categories? A. ANOVA B. T-test
the decision rule for any kind of test is? A. reject the Ho if the p-value associated with the computed value is greater than 0.05 B. Reject the Ho if the p-value associated with the computed value is less than 0.05 What is the correct answer?
What is true about a the p-value for a two sided test relative to the p-value for a one-sided test? a. It is twice as large b. It is the same c. It is twice as wide d. False e. It is half as wide
What is the formula for finding the z-score? The z-score of the mean is always Z =

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