The data set“Tornadoes_2017” located at www.pearsonhighered.com/  sullivanstats contains a variety of variables that were measured for all tornadoes in the United States in 2017.
(a) Is there a difference in the proportion of F0 tornadoes in Texas versus Georgia? The data in column F Scale represent the Fujita F scale of the tornado (on a scale from 0 to 5). An F0 tornado is one where the wind speeds are less than 73 miles per hour. Test whether a different proportion of F0 tornadoes occurs in Texas than in Georgia. Treat the tornadoes that struck in Texas and Georgia as a simple random sample of all tornadoes that struck Texas since 1950 using a 0.05 level of significance. To conduct the hypothesis test in StatCrunch, select Stat 7 Proportion Stats 7 Two Sample 7 With Data. Let 0 from the F scale column be a success for both states. In the “Where:” box type “State = TX” or “State = GA”. The summarized data show that 82 of 168 tornadoes in Texas and 43 of 118 tornadoes in Georgia are F0.
(b) Estimate the difference in the proportion of F0 tornadoes that occur in Texas versus Georgia (compute the difference in proportions as Texas - Georgia) with 95% confidence. Interpret the result