HW5_su2010-1 - 222xSociology 210 Summer 2010 Assignment 5...

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222xSociology 210 Summer 2010 Assignment 5 (due Monday, August 2) For all problems using a hypothesis test, be sure to show your work for all 4 steps in hypothesis testing. State in words what the conclusion you reach from the hypothesis test suggests about the answer to the italicized question. 1. College financial aid offices expect students to use summer earnings to help pay for college. But how large are these earnings? One college studied this question by asking a sample of students how much they earned. Omitting students who were not employed, 1296 responses were received. (dollar figures are expressed in thousands) Group n X s Males 675 $5.325 $2.422 Females 600 $5.117 $2.188 Based on α = .05, are the mean summer earnings significantly higher for males than for females? 2. (From Frankfort-Nachmias and Leon-Guerrero, 2002) Social class is an important sociological variable in many circumstances. Social class membership is related to many attitudes and behaviors, including number of children. Consider the following data adapted from
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HW5_su2010-1 - 222xSociology 210 Summer 2010 Assignment 5...

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