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The mean is 10,5 n=16 Standart deviation is 2,3 We want to know if we can say that the mean will be higher than 10
The mean is 10,5
n=16
Standart deviation is 2,3
We want to know if we can say that the mean will be higher than 10 with what risk of error?
the solution is :
10,5-10=0,5, so 0,5=ta/2*2,3/4, and a=40% so the risk of error is 40%.
I do not understand what the calcul is how do they find 40%?
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