1. t Period answered 713 out of 870 questions correctly. 4th period answered 901 out of 1040 questions correctly.
2. Construct and interpret a 95% confidence interval for the true difference. (1st Period- 4th Period) in proportion of correct answers between the two classes.

Stat Test B

1. Do the data provide convincing evidence that 1st period students are better at answering random questions than 4th period students? Use a= 0.05.

Stat Test 6