Exam 3: Probability Concepts and Distributions

In a probability mass function,the probability of each outcome must be less than zero.

For a fund raiser,the local chapter of Pie Eaters Anonymous is offering a set of silver pie pans worth $1000.Each of the 1200 raffle tickets cost $2.What is the expected value for this raffle?

All of the following are continuous random variables except ________.

A discrete random variable is ________.

Relative frequency probability ________.

Given the probability of event G is ,the probability of event H is ,the probability of both events G and H is = .This is an example of the two events being ________.

There are seven applicants for a job in the 20-29 age group,fourteen in their thirties,and four in the 40-49 age group.What is the probability that the person hired will be older than 29?

A cumulative distribution function,F(x),is a probability distribution in which ________.

All of the following are examples of discrete random variables except ________.

Five identical boxes are kept with different amounts of money in them.It is known that they contain $5,$10,$15,$20,and $50,although it is not clear which box contains what amount of money.What is the chance of choosing a box that contains either an amount greater than $10 or an amount that is evenly divisible by ten?

Two fair coins,one quarter and one nickel,are being flipped.Identify the correct statement from the following.

At a particular toll booth,20% of vehicles use transponders while the rest have their license plates scanned.Usually,150 vehicles pass this toll booth during any one hour time period.During the next hour,what is the probability that exactly 25 vehicles will pass through using a transponder?

What is the likelihood of finding a price between $3.80 and $3.85 for a gallon of gasoline from a normally distributed population of gas prices? Assume μ = $3.78 and σ = $0.05.

In probability theory,an event is ________.

Given that a binomial distribution models n independent replications each with a probability p of success,the variance of the distribution is ________.

The complement of an event A consists of all outcomes in the sample space not in A.

To find the probability of values in a tail of the normal distribution using a standard normal table,________.

How is the concept of a cumulative distribution function useful for a firm or an organization?

The probability density function describes a discrete probability distribution.

Compare and contrast experiment,outcome,sample space,and event in terms of probability distributions.