Probability in a class and normal distributions
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A class consist of 10 males and 30 females. If one student is randomly selected from the class what is the probability of selecting a male?
- 1/40
- 1/10
- 10/30
- 10/40
A class consist of 10 males and 30 females. a random sample of 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 distribution is located in the tail beyond z= 1.50?
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Solution Summary
The solution provides step by step method for the calculation of probabilities and normal distributions.
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Answer
P (selecting a male) = Favorable no. of cases/Total no. of cases
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