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Quiz



This activity contains 15 questions.

Question 1.
The numeric value representing the chance that a particular event will occur is referred to as __________.

 
End of Question 1


Question 2.
The basic elements of probability theory are the individual __________ of a process due to a particular event.

 
End of Question 2


Question 3.
____________ approach to assigning probability always assumes that all elementary events are equally likely to occur.

 
End of Question 3


Question 4.
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.

 
End of Question 4


Question 5.
The weighted average over all possible outcomes for a discrete variable is also called the __________.

 
End of Question 5


Question 6.
A ______________ for a discrete random variable is a complete set of all possible distinct outcomes and their probabilities of occurring.

 
End of Question 6


Question 7.
Choose the following property that is not essential to the binomial distribution.

 
End of Question 7


Question 8.
The __________ of a binomial distribution is the product of its two parameters, n and p.

 
End of Question 8


Question 9.
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.

 
End of Question 9


Question 10.
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.

 
End of Question 10


Question 11.
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.

 
End of Question 11


Question 12.
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.

 
End of Question 12


Question 13.
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.)

 
End of Question 13


Question 14.
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.

 
End of Question 14


Question 15.
If two events are _________, they cannot occur at the same time.

 
End of Question 15





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