Someone please check my work. I need appropriate answers because if I see any random answers that are not relevant to this worksheet then I’m going to moderate it. So keep an eye on that

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Regular price 75$ discount 25%sale price?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)