alculate the 95% confidence intervals for the four different investments included in the following table.

	Small shares	Large shares	Corporate bonds	Treasury notes
Average annual return (%)	20.26%	11.44%	6.65%	3.26%
Standard deviation of returns (%)	42.91%	19.52%	6.58%	4.64%

The 95% confidence interval of small shares is between nothing% and nothing%. (Enter your response as a percent rounded to two decimal places and put the lower number first.)

The 95% confidence interval of large shares is between nothing% and nothing%. (Enter your response as a percent rounded to two decimal places and put the lower number first.)

The 95% confidence interval of corporate bonds is between nothing% and nothing%. (Enter your response as a percent rounded to two decimal places and put the lower number first.)

The 95% confidence interval of Treasury notes is between nothing% and nothing%. (Enter your response as a percent rounded to two decimal places and put the lower number first.)