Ans 5. Chi-squared (Since chi-square test is used to test the relationship or association between two variables)
Ans 6. Multiple Regression (We will observe the agressiveness of children on toys in both the groups who watched the adult model behave agressively and who did not)
Ans 7. Multiple regression
Ans 8. Correlation (Positive correlation observed between grades and sitting position being closer to the front)
Ans 9. T-test ( We would measure the alcoholic beverage consumption for both the groups using the average consumption and then use t-test for the difference of means)
Ans 10. Chi squared (We can test if gender has an association with the interest to travel for which we can use the chi-square test of independence)
Ans 11. Multiple regression
Ans 12. ANOVA (F-test ) ( We test if there is no significant difference in the memory based on low, medium and high amounts of study time)
Ans 13. Chi squared
Ans 14. Chi squared
Ans 15. Multiple regression.
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related...
Kenneth Swan: Attempt 1 Question 3 (1 point) ✓ Saved You want to know if type of instruction and intelligence levels influence an exam score. You group people as having either high or low intelligence. You then put half of the people either in traditional lecture use an individualized method. chi squared O Multiple Regression O ANOVA (F test) O correlation O t-test Question 4 (1 point) Saved You wonder if left-handed people are less likely than right-handed people to...
You want to determine if salary is affected by gender and whether the employee has a graduate degree or not (taken together). The correct statistical technique/test would be: Chi-square Correlation One-tailed ttest Two-tailed ttest Simple linear regression Multiple regression Logistic regression Dummy variable regression ANOVA One-way ANOVA
10 points Save and You want to know if professional artists are more agreeable (1-15 scale) than non-artists. You recruit 100 of each, and compare their scores. What kind of statistical test does this call for? Chi-square for independence Correlation Dependent Samples t-test Chi-square for goodness of fit Single Mean Independent Samples t-test ANOVA
(13 points) Suppose you have a simple linear regression model such that Y; = Bo + B18: +€4 with and N(0,0%) Call: 1m (formula - y - x) Formula: F=MSR/MSE, R2 = SSR/SSTO ANOVA decomposition: SSTOSSE + SSR Residuals: Min 1Q Modian -2.16313 -0.64507 -0.06586 Max 30 0.62479 3.00517 Coefficients: Estimate Std. Error t value Pr(> It) (Intercept) 8.00967 0.36529 21.93 -0.62009 0.04245 -14.61 <2e-16 ... <2e-16 .. Signif. codes: ****' 0.001 '** 0.01 '* 0.05 0.1'' 1 Residual standard...
You operate a travel advisory website, and want to give your users at 5 airports. You record average delay times for each airline, at each airport. Then you run a 2-way ANOVA and get the advice on airline timeliness. You select 4 airlines. and monitor their delays ource of Variance Airline MS Step 7 of 7: 1s the effect of Airports significant at the 0.01 level of significance? Answer 1 Point O No O It cannot be determined You operate...
Question based on inferential statistics. For this you have to take any random data from primary or secondary sources and analyse that data using as much as you can using following 1. Z test 2. T test 3. Correlation and regression 4. ANOVA 5. CHI square test
QUESTION 1 Researchers want to test whether the motor development scores differ for children with different birth weight. They randomly selected 100 children with each three levels of birth weight: low birth weight, normal birth weight, and high birth weight. What test can be used to examine the hypothesis? 01.Paired t test the O2.Independent t test 3.ANOVA 04.Wilcoxon signed-rank test
You want to know whether people who power-pose feel more confident than those who don't. To answer this question, you ask 50 people to power-pose, then rate how confident they are (from 0 to 11) where higher is more. You also ask 50 other randomly picked individuals to rate how confident they are without power-posing. This data is in the file "power_posing.txt". The first column represents the confidence ratings, the second column whether they power-posed (1) or not (0). What...
Question 10 (1 point) In an IR spectrum, if you want to know whether a carbonyl group is present or absent, which wavenumber range should you look into? 3600-3200 cm-1 O 3100-3000 cm-1 O 2850-2700 cm-1 1750-1630 cm-1 1250-1100 cm-1
Question 1 For ANOVA: the null hypothesis is: Mu1 = Mu2 = Mu3......etc True False Question 2 For ANOVA: the alternative hypothesis is: Mu1 ≠Mu2 ≠Mu3......etc. True False Question 3 Both ANOVA and Chi square tests are always right tail tests True False Question 4 For ANOVA, you only complete a Tukey's means comparisons test if the overall F* value was significant (i.e., p<0.05) True False Question 5 Both F and Chi Square distributions vary with df True False Question...