A high school physical education teacher is submitting a report to the principal regarding skills testing for basketball

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?