a trade magazine routinely checks the drive through service times of fast food restaurants. An 80 % confidence interval that results from examining 598 customers in one fast-food chain's drive through has a lower bound of 161.4 seconds and an upper bound of 164.8 seconds. What does this mean?

Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.