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

Question

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

anonymous · Answer

standard deviation divided by the sqrt(sample size)

anonymous · Answer

The sample size is

anonymous · Answer

so how many pigs did they experiment on?

anonymous · Answer

the size of the sample is ... 35

anonymous · Answer

3.4/sqrt(35)