Observe some of the phenomena around your home. Look for something that you can’t explain right away, but that you could test wi
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Answer:
The datapoint 9.0 ppm is outlier at the 90% confidence level.
Explanation:
The old data has following values
mean=10.5 mm
standard deviation 0.2 mm
Now the mean of new values is calculated as following
So the value as 9.0 ppm can be considered easily as outlier in this regard.
Atomic mass= number of protons + number of neutrons
hope this helps
hope this helps