Which of the following is NOT one of the three methods for finding binomial probabilities that is found in the chapter on discrete probability distributions?
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using a simulation
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In the binomial probability formula, the variable x represents the
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In the binomial probability formula, the variable x represents the number of successes.
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If calculations are time-consuming and if a sample size is no more than 5% of the size of the population, the _______ states to treat the selections as being independent (even if the selections are technically dependent).
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5% Guideline for Cumbersome Calculations
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Which of the following is not a requirement of the binomial probability distribution?
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The trials must be dependent.
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Identify the expression for calculating the mean of a binomial distribution.
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np
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A main goal in statistics is to interpret and understand the meaning of statistical values. The _______ can be very helpful in understanding the meaning of the mean and standard deviation.
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range rule of thumb
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For the binomial distribution, which formula finds the standard deviation?
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Square root of npq
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Indicate a similarity between a Poisson distribution and a binomial distribution.
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Both distributions have an independence requirement.
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The standard deviation of the Poisson distribution is calculated using _______.
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Square root of u
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Which of the following is NOT a requirement of the Poisson Distribution?
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The occurrences must be dependent.
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The _______ distribution is a discrete probability distribution that applies to the number of occurrences of some event over a specified interval.
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poisson
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What requirements are necessary for a normal probability distribution to be a standard normal probability distribution?
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The mean and standard deviation have the values of 0 and 1
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Which of the following would be information in a question asking you to find the area of a region under the standard normal curve as a solution?
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A distance on the horizontal axis is given
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The notation P(z<a) denotes _______.
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the probability that Z score is less than A
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Finding probabilities associated with distributions that are standard normal distributions is equivalent to _______.
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finding the area of the shaded region representing that probability
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Which of the following does NOT describe the standard normal distribution?
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The graph is uniform.
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Which of the following is NOT a requirement for a density curve?
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the graph is centered around 0
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A continuous random variable has a _______ distribution if its values are spread evenly over the range of possibilities.
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uniform
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Which of the following groups of terms can be used interchangeably when working with normal distributions?
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areas, probability, and relative frequencies
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Which of the following is NOT a descriptor of a normal distribution of a random variable?
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The graph is centered around 0.
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