all questions are related Use the information given in the paragraph below to a

Question

all questions are related

Use the information given in the paragraph below to a A director of UNT training center has learned three dafferem type. She is interested in detennining if there is a difference in the students who are taught to type using each of the three mcthods, she enrolled students and then randomly assigns 10 students to leam to type by each of methods. At the end of the course, she examines the mumber of oorrect words per oly tenitung inue foe i ANOVA: Single Factor Groups Count Sum Average Variance 10 468 46.8 20.84444 10 521 52.1 21.87778 56.5 26.94444 Method1 Method 2 Method 3 10 565 ANOVA Source of Variotion MS 471.8 Between Groups Within Groups " - 627 27 23.22222 Total 29 13. The correct null hypothesis to test for any difference among methods is A. Ho: All true mean typing speeds differ (so, efficacies of methods differ) from each other. B. Ho: All true mean typing speeds are same (equal). C. Ho: Several of the true mean typing speeds differ from each other. D. Ho: Mean typing speed for Group 3 is less than that for the other groups. E. He: Not all true mean typing speeds are equal. 14. The critical value of the test statistic for the above ANOVA at the 5% level of significance i approximately A. 1.92 B. 1.27 C. 2.90 D. 3.35 E. 2.45

Explanation / Answer

13)

option B is correct

14)

for 2,27 df and 0.05 level critical value =3.35

option D

15)

from above table: option C is correct

16)

option C

17)

option E

ANOVA SS df MS F between 471.8 2 235.9 10.158 within 627 27 23.22 Total 1098.8 29

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.