Reflect triangle bcd with vertices b(-2,3), c(8,7), and d(-1,-5) y=x

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.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).