What do you need to do before you can make a hypothesis?

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.)

According to the tide table below what time of day will the highest tide occur?

Describe uniform velocity and variable velocity in short