Mathematics, 06.08.2019 18:10 JammedBanjo58
The level of pesticides found in the blubber of whales is a measure of pollution in regions of the ocean. a sample of eight male minke whales in the west greenland area of the north atlantic finds a sample mean pesticide level of 357 nanograms per gram (ng/g) of blubber. suppose that the concentration of pesticides in all such whales varies normally with a known population standard deviation of 50 ng/g. a 90% confidence interval to estimate the mean level of pesticide in minke whales in this region is:
Answers: 3
, which is a small sample (n<30) , so we apply t-test .
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