A class consist of 10 males and 30 females. If one student is randomly selected from the class what is the probabilityof selecting a male?
– 1/40
– 1/10
– 10/30
– 10/40
A class consist of 10 males and 30 females. a random sampleof n=3 is selected. If the first two students are both females what is the probability that the third student is a male?
-10/37
-10/40
-10/38
-8/38
What proportion of a normal distributionis located in the tail beyond z= 1.50?
Answer
P (selecting a male) = Favorable no. of cases/Total no. of cases
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The solution provides step by step method for the calculation of probabilities and normal distributions.