in mr. Renault's classroom, 1/2 of the students have a fish as a pet. of the students who have a fish as a pet 3/4 also have a bird as a pet. if there are 16 students in the class, how many have both a fish and a bird pet

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 a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Solve the inequality and graph 6j - 7 < 5