A researcher randomly selects 100 students from each of four colleges and record
ID: 3378070 • Letter: A
Question
A researcher randomly selects 100 students from each of four colleges and records the number who smoke. The results are shown below.
College A College B College C College D
Smokes 17 26 11 34
Doesn't Smoke 83 74 89 66
Estimate the difference in the proportion who smoke at College A versus College C. Interpret.
.-0.31; the proportion of students who smoke is estimated to be 0.31 less at College A than at College C.
.0.08; the proportion of students who smoke is estimated to be 0.08 greater at College A than at College C.
C.-0.17; the proportion of students who smoke is estimated to be 0.17 less at College A than at College C.
.0.03; the proportion of students who smoke is estimated to be 0.03 greater at College A than at College C.
E.0.06; the proportion of students who smoke is estimated to be 0.06 greater at College A than at College C.
A.-0.31; the proportion of students who smoke is estimated to be 0.31 less at College A than at College C.
B.0.08; the proportion of students who smoke is estimated to be 0.08 greater at College A than at College C.
C.-0.17; the proportion of students who smoke is estimated to be 0.17 less at College A than at College C.
D.0.03; the proportion of students who smoke is estimated to be 0.03 greater at College A than at College C.
E.0.06; the proportion of students who smoke is estimated to be 0.06 greater at College A than at College C.
Explanation / Answer
B
.0.08; the proportion of students who smoke is estimated to be 0.08 greater at College A than at College C. is the answer
College A College B College C College D Smokes 17 26 11 34 Doesn't Smoke 83 74 89 66 Proportin 0.204819 0.351351 0.123596 0.515152 pa-pc 0.081224Related Questions
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