Do left-handed or right-handed people make more money? One study¹recorded the hourly earnings for a random sample of 2295American men, of whom 2027were right-handed and 268were left-handed. The right-handed men earned an average of$13.10per hour, while the left-handed men earned an average of $13.40per hour. The sample standard deviation for both left-handed and right-handed workers was $7.90 about. Explain answers please.

(a) What is the test statistic? (-.148 and -0.5842 are NOT the answers, please do not comment with either of them)

(b) what is the p-value?