There are many cell phone case options on the market. This discretionary item comes in a variety of colors, materials, thicknesses, protection levels, and more. Amit runs a small buisness that sells computer and phone case accessories. he has kept the following inventory of cell phone case sales for similar model phones:$19.99, $8.99, $35.99, $49.99, $49.99, $39.99, $99.99, $79.99, $35.99, $19.99, $49.99, $29.99, $49.99, $59.99, $35.99, $49.99, $19.99, $8.99, $29.99, $35.99. Using sigma notation calculate the mean cell phone case price. round your answer to the nearest cent. construct a frequency distribution for the data. use the frequency distribution to determine the mean.