question archive Emily finished collecting data for following data to examine the effect of the number of days of class completed on number of re testing use this graph Person # of Days # of retest 1 1 4 2 3 1 3 4 2 4 6 0 5 3 2 6 4 1 1
Emily finished collecting data for following data to examine the effect of the number of days of class completed on number of re testing use this graph Person # of Days # of retest 1 1 4 2 3 1 3 4 2 4 6 0 5 3 2 6 4 1 1
Subject:MathPrice: Bought3
Emily finished collecting data for following data to examine the effect of the number of days of class completed on number of re testing use this graph
| Person | # of Days | # of retest |
| 1 | 1 | 4 |
| 2 | 3 | 1 |
| 3 | 4 | 2 |
| 4 | 6 | 0 |
| 5 | 3 | 2 |
| 6 | 4 | 1 |
1. It is hypothesized a negative relationship. What is the research hypothesis?
a) H1: r > 0
b) H1: r ≠ 0
c) H0: ρ = 0
d) H1: r < 0
2. Assuming a significance level of .05, what is the critical value for this test?
a) +/-.8822
b) -.8114
c) -.7293
d) -.6215
3. Should accept or reject the null hypothesis and why?
4. Interpret results. What do they tell her about # of months of treatment and # of re-arrests?
5. Calculate, report, and interpret the coefficient of determination
6. Calculate the regression equation and answer the following questions based on your calculations.
What is ∑xy?
a) 25
b) 31
c) 10
d) 21
7. What is the slope?
8. What is the final regression equation?
9. What is the y-intercept rounded to two decimal places?
10. what is the predicted number of re-testing for someone who completed five days of class?
