Exam 6: Discrete Probability Distributions

For the following distribution, What is the variance of the distribution?

The probability of a particular outcome must always be between 0 and 100 inclusive.

David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. What is the probability that no more than twenty pay in cash?

What must you know to develop a binomial probability distribution?

If $\pi$ = 1/5 and n = 100, what is the standard deviation of this binomial distribution? _______

A probability distribution is a listing of the expected outcomes of an experiment and the probability of each outcome occurring. What is the sum of the probabilities? _____

A probability distribution is a mutually exclusive and collectively exhaustive listing of experimental outcomes that can occur by chance and their corresponding probabilities.

The following is a binomial probability distribution with n = 3 and $\pi$ = 0.20. The variance of the distribution is

There are ten flights from Minneapolis to St. Cloud each day. The probability that any one flight is late is 0.05. Using the binomial probability formula, what is the probability that none are late?

A new car was put into production. It involved many assembly tasks. Each car was inspected at the end of the assembly line and the number of defects per unit was recorded. For the first 100 cars produced, there were 40 defective cars. Some of the cars had no defects; a few had one defect, and so on. The distribution of defects followed a Poisson distribution. Based on the first 100 produced, about how many out of every 1,000 cars assembled should have one or more defects?

Chances are 50-50 that a newborn baby will be a girl. For families with five children, what is the probability that all the children are girls?

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. What is the mode of the distribution?

A probability distribution shows the distribution of a ______________.

A company is studying the number of daily debit card purchases. If there were 20 purchases and the probability of a debit card purchase is 0.5. What is the standard deviation of the number of debit card purchases? ____

Which one of the following is NOT a condition of the binomial distribution?

A binomial probability distribution approaches a greater degree of symmetry as the probability of success remains constant and the number of trials becomes ___________.

Data show that the weight of an offensive linesman may be any weight between 200 and 350 pounds. The distribution of weight is based on a

Affirmative action commitments by many organizations have led to an increase in the number of women in executive positions. Satellite Office Systems has vacancies for two executives that it will fill from among four women and six men. What is the probability that no woman is selected?

For the following probability distribution, The standard deviation is _____________.

David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. What is the probability that more than ten and less than fifteen customers pay in cash?