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Q1) Determine the following probabilities:
a) Events A and B are mutually exclusive events defined on common sample space. If P (A) =0.3 and P (A or B) = 0.75, find P (B).
b) Events A and B are defined on common sample space. If P (A) =0.30, P (B) =0.50 and P (A or B) =0.72, determine P (A and B).
Q2) A small bag of skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for X.
Q3) If random variable z is standard normal score, which of given probabilities could easily be found out without referring to a table?
i) P (z >5)
ii) P (z < 1.43)
iii) P (z < -2.95)
iv) P (z > -0.35)
Q4) In which of the following binomial distributions is normal approximation appropriate?
i) n=100, p=0.04
ii) n=50, p=0.09
iii) n=75, p=0.06
iv) n=12, p=0.45
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