1. In a college course your score for each of four exams was 80%, 93%, 88%, and 85%. Your quiz scores were 100%, 90%, 70%, 75% and 100%. Your final exam score was 86%. What is your overall average in this class? Your final course average is based on a weighting of several items: Four Exams (15% each), Quizzes (10% total), Final Exam (30%). No quizzes or exams will be dropped.

A. 90%

B. 91%

C. 92%

D. 93%

E. None of the above.

2. A confidence interval for a population mean

A. estimates the population range.

B..estimates a likely interval for a population mean.

C. estimates the population standard deviation.

D. is found by taking a census.

E. estimates the sample mean.