In a class of c children there are 16 boys what fraction of the class are boys

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.

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

98 point question what is the record for most points in one