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In 1987, an Enviormental Action Group reported a 65 percent [#permalink]
11 Mar 2007, 19:53
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In 1987, an Enviormental Action Group reported a 65 percent response rate to a questionnaire sent to all of its members. The subject of the questinnaire was ocean dumping. On the basis of these results, the group expects a 65 t0 70 percent response rate to its upcoming questionnare on air pollution.
The enviormental group's expectation is based on wihic of the following assumptions?
A) The groups membership has not declined by more that 5% since 1987.
B)The same number of surveys will be distributed as were distributed in 1987.
C) People who are concerned about ocean dumping are even more concerned about air pollution.
D) The response rate of one questionnaire can be predicted from the other.
E)The total amount of pollution today is the same as it was in 1987.
The Group can project the response rate for air pollution survey only if it assumes that result of a past survey can be extrapolated to calculate response rate for new surveys. All choices other than D are either outside scope of argument or supply redundant information
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