How in the world do I do this? I do not understand how to gather the mean or median

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons