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Quiz

This activity contains 15 questions.

The numeric value representing the chance that a particular event will occur is referred to as __________.

 independence probability area of opportunity contingency

The basic elements of probability theory are the individual __________ of a process due to a particular event.

 responses outcomes expected values variables

____________ approach to assigning probability always assumes that all elementary events are equally likely to occur.

 Subjective Nominal Classical Empirical

If two events A and B are __________, then the probability that both event A and event B will occur is equal to the product of their respective probabilities.

 conditional complementary dependent independent

The weighted average over all possible outcomes for a discrete variable is also called the __________.

 variance elementary event expected value arithmetic mean

A ______________ for a discrete random variable is a complete set of all possible distinct outcomes and their probabilities of occurring.

 contingency table probability distribution hypergeometric distribution summary table

Choose the following property that is not essential to the binomial distribution.

 The outcome on a particular trial is independent of the outcome on any other trial. Each elementary event is classified into one of two mutually exclusive and collectively exhaustive categories. The probability of an outcome being classified as success, p, is constant from trial to trial. None of the choices are correct.

The __________ of a binomial distribution is the product of its two parameters, n and p.

 complement standard deviation probability mean

The probability that the xth success occurs on the nth trial, in case that there is a constant probability of success, p, is determined using a _____________ distribution.

 hypergeometric probability negative binomial Poisson

If one out of every 25 students is expected to fail an exam, determine the probability that a professor grading exams from a class of 100, will give the first exam a failing grade.

 0.24 0.04 0.16 0.08

A researcher has found that the number of defective parts produced for a given process follows a Poisson distribution with a mean of 5.8 defective parts per hour. Give the standard deviation for the number of defective parts for this process.

 11.6 33.6 2.4 5.8

A chemical engineer is trying to electroplate copper onto a circuit board. The engineer has found that the probability that a plating will be successful follows a geometric distribution and has a mean of 12. Determine the standard deviation for this process.

 10.52 11.54 12.08 8.09

A box contains the following geodes, 4 hemalites, 5 tiger eyes, and 3 smoky quartz. If 3 geodes are removed, what is the probability that exactly two will be smoky quartz? (Use the formula for the hypergeometric distribution.)

 0.877 0.576 0.123 0.246

A hypergeometric distribution has a mean of 15 when the sample size is 30 and the population size is 100. Determine the standard deviation for the distribution.

 2.3 3.9 15 0.3

If two events are _________, they cannot occur at the same time.

 elementary mutually exclusive independent conditional