First, find the mean. You'll need it to compute the variance.

The variance of the sample is then computed with the formula

The standard deviation is the square root of the variance, so
The answer c, because they got 9 out of 15 flips being heads. This probability is 0.6. The other answers are not accurate.
It would be bisecting angles
Answer: Make an equation explaining how blue fire hydrant "b" relates to green fire hydrant "g". Once you have your equation choose the one on the multiple choice that matches your work.
Step-by-step explanation: