Which is the correct standard notation for 9.3 × 105?

Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 70 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 66 miles per hour and 74 miles per hour. (assume the data set has a bell-shaped distribution.)

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Gunpowder residue is most likely to show up where on a shooters hands