Moderate# Righties and Lefties

APSTAT-S4PLFJ

Researchers wanted to test whether right-handed individuals earn more than left-handed individuals.

A survey of $60$ randomly selected left-handed individuals found that they had an annual income of $\$42,345$ and standard deviation of $\$7,450$.

The same survey found that $50$ randomly selected right-handed individuals had an annual income of $\$46,812$ and standard deviation of $\$5,943$.

If researchers concluded that this data gives significant evidence right-handed individuals earn more, they