Does anyone know this?

Alivestock company reports that the mean weight of a group of young steers is 1100 pounds with a standard deviation of 93 pounds. based on the model n(1100,93) for the weights of steers, what percent of steers weigh a) over 1050 pounds? b) under 1300 pounds? c) between 1150 and 1250 pounds?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e