Answer:
Step-by-step explanation:
Given that an observation from a normally distributed population is considered "unusual" if it is more than 2 standard deviations away from the mean. There are several contaminants that can harm a city's water supply. Nitrate concentrations above 10 ppm (parts per million) are considered a health risk for infants less than six month of age.
We can say 1.59 and 2.52 if taken average would be the mean
Mean = 2.01
The deviations on either side = 2.52-2.01 = 0.41
This can be taken as 2 std dev
So std dev = 0.205
Hence we can take nitrate concentration is normal with mean = 2.01 and std deviation is 0.205
N(2.01, 0.205)
There aren’t any following equations, so I’m not sure if this is there. It would be 5/3 if 5/3 is there. This is because two negatives next to each other becomes positive. Hope this helped
you need to start from the left upper corner
Answer:
-3 and positive 3
Step-by-step explanation:
Answer:
nuts
Step-by-step explanation:
