A sample of 81 items is taken form population with a standard deviation 45 kilograms. The sample mean is 112 kilograms. What weights are included in the 68% confidence interval NEED HELP

41/2 - 1 1/3 what is the answer as a fraction?

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.