A biologist wants to know the highest likely proportion of squirrels in the area that are infected with a particular disease. A random sample of 100 squirrels was tested. Use Sheet 8 of the Excel file linked above to calculate p^ and the 95% confidence interval.

p^=

Upper bound for 95% confidence interval =

Lower bound for 95% confidence interval =

The biologist can say with 95% confidence that the true population proportion of the local squirrel population that is infected with the disease is in the interval [000000000,000000000].

The highest likely proportion is

z* is 1.960