1) Binomial distribution is negatively skewed when:__________________? a. p=0 b. p>1/2 c. p=1/2 d. p=1/3
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2) Binomial distribution has parameters:______________? a. Three b. Two c. One d. Four e. None
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3) The variance of binomial distribution is always:________________? a. Less than mean b. Equal to mean c. Greater than mean d. Equal to standard deviation e. None of these
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4) Binomial distribution is symmetrical when:_________________? a. p = q b. p > q c. p < q d. np > npq
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5) The successive trials are with replacement in:________________? a. Hpergeometric distribution b. Binomial distribution c. Geometric distribution d. None of these
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6) Which of the following is not a condition of the binomial distribution ? a. Only 2 possible outcomes b. Have constant probability c. Must have at least 3 trials d. Trials must be independent
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7) if in a binomial probability distribution mean and variance are 6 and 2.4 respectively, then the parameters of this distribution are:____________________? a. n = 10, p = 6/10 b. n = 50, p = 6/50 c. n = 10, p = 3/5 d. n = 10, p = 2/5
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8) In a binomial distribution, n = 20 and p = 3/5, then variance of this distribution ______________? a. 60 b. 12 c. 4.8 d. 0
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9) Variance of binomial distribution is always:______________? a. Less than mean b. Greater than mean c. Equal to mean d. Less than equal to mean
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10) What is the variance of binomial distribution __________________? a. n p b. np (1 – p) c. np/q d. nq/p
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