WILL GIVE BRAINLIEST- pls solve all of these or at least four according to instructions and tell me exactly how to do work in easiest way possible thanksss

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.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?