Which of the following statements correctly defines the null hypothesis HO? A. level of educational attainment is not independent of age B. level of educational attainment is independent of age C. neither of these statements is correct for HO Enter letter corresponding to correct answer (ii) Which of the following statements correctly defines the alternative hypothesis HA?
8.1
A person’s educational attainment and age group was collected by the U.S. Census Bureau in 1984 to see if age group and educational attainment are related. The counts in thousands are in following table ("Education by age," 2013):
Table: Educational Attainment and Age Group
|
Education |
Age Group |
Row Total |
||||
|
25-34 |
35-44 |
45-54 |
55-64 |
>64 |
||
|
Did not complete HS |
5416 |
5030 |
5777 |
7606 |
13746 |
37575 |
|
Competed HS |
16431 |
1855 |
9435 |
8795 |
7558 |
44074 |
|
College 1-3 years |
8555 |
5576 |
3124 |
2524 |
2503 |
22282 |
|
College 4 or more years |
9771 |
7596 |
3904 |
3109 |
2483 |
26863 |
|
Column Total |
40173 |
20057 |
22240 |
22034 |
26290 |
130794 |
Do the data show that educational attainment and age are independent? Test at the 5% level.
(i) Which of the following statements correctly defines the null hypothesis HO?
A. level of educational attainment is not independent of age
B. level of educational attainment is independent of age
C. neither of these statements is correct for HO
Enter letter corresponding to correct answer
(ii) Which of the following statements correctly defines the alternative hypothesis HA?
A. level of educational attainment is not independent of age
B. level of educational attainment is independent of age
C. neither of these statements is correct for HO
Enter letter corresponding to correct answer
(iii) Enter the level of significance α used for this test:
Enter in decimal form. Examples of correctly entered answers: 0.01 0.02 0.05 0.10
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