C O ezto mheducation.com/hm.tpx nment 7 Question 23 (of 24 20.00 points The fuel
ID: 3179733 • Letter: C
Question
C O ezto mheducation.com/hm.tpx nment 7 Question 23 (of 24 20.00 points The fuel efficiencies for a sample of 27 compact, midsize, and large cars are entered into a statistical software package. Use the 0.01 significance level. Summary Sum Average Variance Compact 12 268.3 22.35833 9.388106 Midsize 9 172.4 19.15556 7.315278 7.303 100.5 16.75 Additional results are shown below. ANOVA F P-value Source of Variation SS DF MS Between Groups 136.4803 2 68.24014 8.258752 0.001866 Within Groups 198 3064 24 8.262766 334.7867 26 a. What is the critical value and the test statistic? (Round the final answers to 2 decimal places.) The test statistic is b. Investigate whether there are any differences in the mean fuel efficiencies of the three cars. The mean fuel efficiencies are (Click to select) c. State the decision regarding the null hypothesis? The null hypothesis of equal means is (Click to select)Explanation / Answer
Test Statistic F=8.258752
Critical value at 0.01 level of significance and (2,24) degrees of freedom is= 5.61
Since test statistic is greater than critical value we reject null hypothesis
a)Test statistic=8.258752, Critical value=5.61
b) The mean of fuel effiecients are different
c) The null hypothesis of equal means are rejected
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.