A researcher classifies each of 29 people as either High or

A researcher classifies each of 29 people as either High- or Low- Need for Success. He wants to know if this variable predicts persistence in a boring physical task (persistence is measured as time, in minutes, spent on the task before the subject gives up). For the 17 High-Need subjects, mean persistence time was 12.3 minutes, with a standard deviation of 7.1. For the 12 low-Need subjects, the mean time was 8.4 minutes, with a standard deviation of 6.3. The proper test to use is List the critical assumptions that must be made in order to interpret the results of this test (be brief) Test the researcher\'s hypothesis (at the .01 level).

Solution