A binomial random variable can take values from what number up to n?
Correct answer B. 0
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Statistics MCQs
Page 25 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
Page 25 of 37
In a binomial experiment, how can the outcome of each trial be classified?
Correct answer A. Success or Failure
For two independent random variables X and Y, what is Var(X ± Y)?
Correct answer B. Var(X) + Var(Y)
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In a binomial experiment, how are successive trials related?
Correct answer A. Independent
What is the formula for the coefficient of variation (C.V.)?
Correct answer A. S.D./Mean × 100
If c is a non-random constant, what is E(c)?
Correct answer B. C
What is true of successive trials in a binomial experiment?
Correct answer B. Independent
When X denotes the number of successes in a binomial experiment, what is X called?
Correct answer C. Binomial random variable
What is the probability that a ball drawn at random from a jar is of a given colour, when the jar’s contents are not stated?
Correct answer A. Cannot be determined from given information
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For a probability density function, what is the probability of any single point?
Correct answer C. 0
Between which values does the probability of an event lie?
Correct answer C. 0 and 1
When is the hypergeometric distribution used instead of the binomial or Poisson?
Correct answer B. Without replacement from a finite population
For a random variable X, what kind of average is E(X)?
Correct answer A. Arithmetic Mean (AM)
For a distribution function F(x), F(−∞) = 0. What is F(∞)?
Correct answer A. 1
How is the distribution function F(x) defined?
Correct answer A. P(X ≤ x)
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If a binomial distribution is stated to have a mean of 5 and a standard deviation of 2.5, what can be said about the statement?
Correct answer B. Wrong
What is always true of a probability function?
Correct answer C. Non-negative
Which of the following is not a requirement of the binomial distribution?
Correct answer D. Equally likely outcomes
How can a discrete probability distribution be represented?
Correct answer D. All of these
For a discrete random variable X, what is E(X) equal to?
Correct answer C. ∑x·P(x)