Statistics Probability Questions?

Posted on 2014-11-29 12:33:00 in Statistics by ALISTER

(Q1) Which of the following values cannot be probabilities of events and why?
1/5 .94 --.55 1.56 5/3 0.0 --1/5 1.0

(Q2) A hat contains 50 marbles. Of them, 24 are red and 26 are green. If one marble is randomly selected out of this hat, what is the probability that this marble is
a. red?
b. green?

(Q3) A die is rolled once. What is the probability that
a. a number more than 2 is obtained?
b. a number 3 to 6 is obtained?

(Q4) A random sample of 2000 adults showed that 1320 of them have shopped at least once on the Internet. What is the (approximate) probability that a randomly selected adult has shopped on the Internet?

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