Consider the following table for the total annual returns for a given period of time.

Series	Average return		Standard Deviation
Large-company stocks	11.7	%	20.6	%
Small-company stocks	16.4		33.0
Long-term corporate bonds	6.8		9.8
Long-term government bonds	6.1		9.4
Intermediate-term government bonds	5.6		5.7
U.S. Treasury bills	3.8		3.1
Inflation	3.1		4.2

Requirement 1:

What range of returns would you expect to see 68 percent of the time for long-term corporate bonds? (Negative amount should be indicated by a minus sign. Input your answers from lowest to highest to receive credit for your answers. Do not round intermediate calculations. Enter your answers as a percentage rounded to 2 decimal places (e.g., 32.16).)

Requirement 2:

What about 95 percent of the time? (Negative amount should be indicated by a minus sign. Input your answers from lowest to highest to receive credit for your answers. Do not round intermediate calculations. Enter your answers as a percentage rounded to 2 decimal places (e.g., 32.16).)