Managerial Statistics Practice test


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1) If two events (both with probability greater than 0) are mutually exclusive, then
2) Which one of these variables is a binomial random variable?
3) A frequency distribution provides the following information
4) which of the following is a correct statement?
5) Consider the following data: 1, 7, 3, 3, 6, 4
the mean and median for this data are
6) The probabilities of X, Y, Z becoming managers are 4/9, 2/9 and 1/3 respectively. The probability that the bonus scheme will be introduced, if X, Y , Z becomes managers are, 3/10, 1/2, and 4/5 respectively. If the bonus scheme has been introduced, what is the prob. that a manager appointed was X
7) The mean is a measure of
8) An experiment consists of making 80 telephone calls in order to sell a particular insurance policy. The random variable in this experiment is a
9) If you are told a sample has a mean of 19 and a variance of 0, what must you conclude?
10) Which of the following is not a property of a binomial experiment?

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