Name: BA214 Exam 2 Multiple Choice Identifeo the choice that best completes t th

Question

Name: BA214 Exam 2 Multiple Choice Identifeo the choice that best completes t the statement or answers the question 1. What is the error of rejecting a true null hypothesis? 32 a. a Type I error b. a Type lII error can be either a or b, depending on the situation 5. Refer to Exhibit 3. What is the conclusion that can be reached about the difference in the average final examination scores between the two classes? (Use a 05 level of significance.) a. There is a difference, but it is not significant. b. There is a statistically significant difference in committed when not enough information is available d. Exhibit 2 A study found that, in 2015, 12.5% of US workers the average final examination scores between the two classes. It is impossible to make a decision on the basis of the information given. There is no statistically significant difference in the average final examination scores between the two classes belonged to unions. Suppose a sample of 400 U.S. workers is collected in 2016 to determine whether union efforts to organize have increased union c. membership. Ho: p s.125;H: p> .125. A sample result shows that 64 of the workers belonged to d. 2. Refer to Exhibit 2?The test statistic is Refer to Exhibit 3. The point estimate for the difference between the means of the two populations is a. 0.80 6. b. 2.12 c. 1.15 d. 0.05 3. Refer to Exhibit 2. At a.05 level of significance, what is your conclusion d. 58.5 accept alternative hypothesis a. b. Refer to Exhibit 3. The test statistic for the difference between the two population means is 7. accept null hypothesis reject alternative hypothesis c. d. reject null hypothesis 4. Refer to Exhibit 2. The p-value is b. 0.017 d. 0.2112 d. -47 8. Refer to Exhibit 3. What is rejection rule using critical value apporach at 5% level of significance for the difference between the two population Exhibit 3 A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following informatiorn a. z s -1.645 b. z 21.645 or z S -1.645 c. z21.96 or z S -1.96 d. z21.96 9. Refer to Exhibit 3. The p-value for the difference between the two population means is a. 0027 b. .0456 Today 84 Five Years Ago

Explanation / Answer

1.
Type I error

Option a is correct

2.
pcap = 64/400 = 0.16
SE = sqrt(0.125 * (1-0.125)/400) = 0.0165
Test statistic,
z = (0.16 - 0.125)/0.0165 = 2.12

Option b is correct.

3.
For z-value = 2.12, p-value = 0.017
As p-value is less than the significance level of 0.05, we reject the null hypothesis.

Option c is correct.

4.
p-value = 0.017
Option b is correct.

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

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