1. Determine the population proportion of tornadoes in 2017 in which the F scale was 0.
2. The data provided next represents a random sample of 50 tornadoes from 2017. What is the sample proportion of tornadoes in this sample for which the F scale was 0?
   1. statcrunch(Links to an external site.)
   2. excel:F0 tornado first sample size 50.xlsxDownload F0 tornado first sample size 50.xlsx
3. Verify that the requirements for constructing a confidence interval about the population proportion of F0 tornadoes in 2017 using the sample from part (2) are satisfied.
4. Construct and interpret a 90% confidence interval for the population proportion of F0 tornadoes in 2017, using the sample from part (2).
5. What proportion of 90% confidence intervals would you expect to include the population proportion found in part (1)?
6. What would cause a confidence interval to result in an interval that does not include the population proportion?
7. The data providednextrepresents adifferentsample of 50 tornadoes from 2017. Construct and interpret a 90% confidence interval based onthissample.
   1. statcrunch(Links to an external site.)
   2. excel:F0 tornado second sample size 50.xlsxDownload F0 tornado second sample size 50.xlsx
8. Are the upper and lower bounds on this interval the same as the interval from part (4)? Why or why not? Does this new interval include the population proportion?