Final answer:
Life expectancy varies by country, with a global average of 67 years in 2013. In Australia, it was 79 years for males and 84 for females, while in the US, the average was around 79 years. Women generally have a longer life expectancy than men by about five years.
Step-by-step explanation:
The average life expectancy for males and females born in 2013 can vary depending on the country. For instance, in Australia, the life expectancy at birth in 2013 was 79 years for males and 84 years for females. However, the global average life expectancy in 2013 was about 67 years, with developed countries typically having higher life expectancies.
In comparison, the United States had an average life expectancy of about 79 years in the provided time frame. It's noteworthy that on a global scale, women tend to live approximately five years longer than men. While life expectancy is an average, many individuals live beyond these average ages, with projections that by 2050, about half a million Americans will be at least 100 years old.
It's essential to realize that these are averages and that a multitude of factors including health care, lifestyle, economic status, and genetics play significant roles in determining an individual's lifespan. Life expectancy values are also subject to change with time due to both advancements in healthcare and challenges such as diseases or socioeconomic conditions.