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OpenStudy (anonymous):
An experiment using 35 guinea pigs is set up to study the weight of the pigs after injecting them with a drug. If the population mean is 23.5 grams with a standard deviation of 3.4 grams, what is the margin of error of the sample mean? 0.097 grams 0.575 grams 0.701 grams 1.149 grams 1.403 grams
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OpenStudy (anonymous):
standard deviation divided by the sqrt(sample size)
OpenStudy (anonymous):
The sample size is
OpenStudy (anonymous):
so how many pigs did they experiment on?
OpenStudy (anonymous):
the size of the sample is ... 35
OpenStudy (anonymous):
3.4/sqrt(35)
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