Below is a scatterplot together with the least squares regre…

Below is a scatterplot together with the least squares regression line for the Final Grade and the Average Exam score for a random sample of students from an introductory Statistics class.    a. Describe the important features of this scatterplot. [2]   b. State and interpret the slope. [3]   c. For an average exam score of 130, what is the predicted final grade?  Do you trust this prediction? [4]  

A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M i…

A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HC7H5O2 is 6.5 × 10-5.   For the last few problems, partial credit is available if you email me your work immediately after submission.