Answer:
-2.25
Step-by-step explanation:
We have that the mean (m) is equal to 500, the standard deviation (sd) 20
They ask us for P (x <455)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / sd
We have all these values, replacing we have:
z = (455 - 500) / (20)
z = -2.25
Answer:
2 / 6 = 0.3333...
4 / 6 = 0.6666...
5 / 6 = 0.83333...
Step-by-step explanation:
24 un the eighth row im sure of it because it adds my 3 each time if you look at the 1st row it says 15 then it adds by another 3 to 18 and then to 21
Answer:
Step-by-step explanation:
If the picking is random, there are 4 chances out of a possible 13 options.
4/13