Hello,
I don't know much well how can I resolve these exercises.
In a particular system of units, the concentration of nitrate in a particular area of a river (near the industrial activity) follows a normal distribution with mu=8 and sigma=2.
A) Calculate the probability of which after gathering 2 samples, the levels of nitrates are superior to 10 units in someone of the samples.
B) In the same previous conditions, now with 100 samples. Calculate the probability of which in 60 or more samples it will present a concentration superior to 10 units.
Thank you very much for your help
I don't know much well how can I resolve these exercises.
In a particular system of units, the concentration of nitrate in a particular area of a river (near the industrial activity) follows a normal distribution with mu=8 and sigma=2.
A) Calculate the probability of which after gathering 2 samples, the levels of nitrates are superior to 10 units in someone of the samples.
B) In the same previous conditions, now with 100 samples. Calculate the probability of which in 60 or more samples it will present a concentration superior to 10 units.
Thank you very much for your help
Last edited: