Triangle ABC is similar to triangle XYZ. Set up a proportion to solve for x

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

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.

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.