The lengths of a lawn mower part are approximately normally distributed with a given mean l = 4 in, and standard deviation
0 = 0.2 in. What percentage of the parts will have lengths between 3.8 in, and 4.2 in. ?
O 34%
O 68%
95%
О 99.7%

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright