Is the width of a tornado related to the amount of distance for which the tornado is on the ground for tornadoes in Louisiana? Go to the site of pearsonhighered to obtain the data file 14₄_12. Treat these data as a random sample of all tornadoes that have ever hit Louisiana.
We have learned that as a tornado's width increases, its length also increases. Suppose we want to know whether tornadoes that result in an injury are on the ground longer than those that do not. Create an indicator variable Injury where 0 represents a tornado without an injury and 1 represents a tornado with an injury. Hint: In StatCrunch, use the ifelse command under Compute > Expression as follows: ifelse(Injuries = 0, 0, 1)
a) True
b) False