professor is interested in seeing the effects a tutor has on her students' exam scores. She takes a sample of her students and takes their pre exam scores and then gives them 1 week with a tutor and has them take the exam again (same material, different questions). Does the tutor appear to be helping? Pre Post 72 78 78 80 66 66 60 70 58 78 45 69 65 76 70 80 63 82 Please calculate the test statistic and pvalue. What can be concluded? Support your answer. Please calculate the 95% confidence interval Interpret the interval. What can be concluded? Support your answer.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
professor is interested in seeing the effects a tutor has on her students' exam scores. She takes a sample of her students and takes their pre exam scores and then gives them 1 week with a tutor and has them take the exam again (same material, different questions). Does the tutor appear to be helping?
| Pre | Post |
| 72 | 78 |
| 78 | 80 |
| 66 | 66 |
| 60 | 70 |
| 58 | 78 |
| 45 | 69 |
| 65 | 76 |
| 70 | 80 |
| 63 | 82 |
- Please calculate the test statistic and pvalue.
- What can be concluded? Support your answer.
- Please calculate the 95% confidence interval
- Interpret the interval.
- What can be concluded? Support your answer.
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 6 images
