Question
In: Statistics and Probability
A standardized test has a scale that ranges from 3 to 45. A new type of...
- A standardized test has a scale that ranges from 3 to 45. A new type of review course for the. test was developed by a training company. The accompanying table shows the scores for nine students before and after taking the review course. Use 0.01 significance level to determine if the average test score is higher for the students after the review course when compared with before the course.
|
Student |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|||
|
Test Scores |
Before |
24 |
20 |
18 |
3 |
19 |
33 |
32 |
21 |
34 |
||
|
After |
26 |
25 |
16 |
36 |
22 |
32 |
23 |
34 |
31 |
|||
|
i. Identify the claim and state the Ho and HI. |
||||||||||||
|
ii. Find the critical value. |
||||||||||||
|
iii. Calculate the test statistic. |
||||||||||||
iv. Make a decision to reject or fail to reject the Ho. (1 Mark)
v. Interpret the decision in the context of the original claim.
Solutions
Expert Solution
Here
the data is on same student before and after review so the data is
dependent. So a paired t test is appropriate.
orchestra answered 1 year agoRelated Solutions
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