In: Statistics and Probability
The following data give the number of hours 10 students spent studying and their corresponding grades on their midterm exams.
Hours Studying | 0 | 0.5 | 1 | 1.5 | 3 | 3 | 3.5 | 4 | 4 | 5.5 |
---|---|---|---|---|---|---|---|---|---|---|
Midterm Grades | 63 | 63 | 67 | 69 | 71 | 72 | 73 | 73 | 81 | 89 |
A. Calculate the sum of squared errors (SSE). Use the values b0=61.3521 and b1=4.1338 for the calculations. Round your answer to three decimal places.
B. Calculate the estimated variance of errors, s2e. Round your answer to three decimal places.
C. Calculate the estimated variance of slope, s2b1. Round your answer to three decimal places.
D. Construct the 80%confidence interval for the slope. Round your answers to three decimal places. Lower endpoint: _______ Upper endpoint: ________
E. Construct the 98%confidence interval for the slope. Round your answers to three decimal places. Lower endpoint: _______ Upper endpoint: ________