A psychology researcher has a theory that predicts women will tend to carry more cash than men. A random sample of Ersatz University students revealed that 16 females had a mean of $22.30 in their wallets with a standard deviation of $3.20, while 16 males had a mean of $17.30 with a standard deviation of $9.60. The researcher's hypothesis would lead us to perform a:

Question

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The researcher's theory predicts that women will carry MORE cash than men, so we would perform a one-tailed (or directional) test with the alternative hypothesis stating that the population mean for females is greater than the population mean for males. Therefore, we would use a right-tailed test.

A Psychology Researcher Has a Theory That Predicts Women Will