THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below. 
-Determine the intercept of the sample regression line.
Definitions:
Reliability
The degree to which a test, tool, process, or system consistently produces the same results under the same conditions.
Reliability
The consistency of a measurement, test, or instrument to produce stable and consistent results over time.
Measuring
The process of determining the size, quantity, or degree of something using instruments or tools designed for such purposes.
Correlation Coefficients
Statistical measures that indicate the extent to which two variables fluctuate together, showing the strength and direction of their relationship.
Q11: What is the upper confidence limit of
Q14: What does the following plot of residuals
Q16: At 5% significance level,the upper-tailed critical value
Q27: Calculate the width of the interval for
Q46: In order to estimate with 95% confidence
Q55: Test at the 10% significance level the
Q98: Compute the value of the coefficient of
Q130: How would you interpret the slope coefficient
Q143: Suppose that we are interested in exploring
Q230: In a multiple regression model with K