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A researcher expects a treatment to produce an increase in the population mean. the treatment is evaluated using a one-tailed hypothesis test, and the test produces z = −1.85. based on this result, what
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A researcher expects a treatment to produce an increase in the population mean. the treatment is evaluated using a one-tailed hypothesis test, and the test produces z = −1.85. based on this result, what is the correct statistical decision?

User Evgeni Nabokov
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the statistics of increasing; z+1.85
User Bill Parker
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