Exam 5: Reproductive Choices

According to the Mortgage Bankers Association, 11% of U.S. mortgages were delinquent last year. A delinquent mortgage is one that has missed at least one payment but has not yet gone to foreclosure. A random sample of eight mortgages was selected. What is the probability that less than three of these mortgages are delinquent?

A statistics class at Wilmington College has 25 students of which 15 are math majors and 10 are business majors. The professor randomly selects five students to work together on a group project. What is the mean of this probability distribution if selecting a business major is defined as a success?

Assume that the number of pieces of junk mail per day that a person receives in their mail box follows the Poisson distribution and averages 4.3 pieces per day. What is the probability that this person will not receive any junk mail tomorrow?

The mean of a discrete probability distribution is the weighted average of the outcomes of the random variables that comprise it.

A ______ distribution is useful for calculating the probability that a certain number of events will occur over a specific interval of time or space.

According to the Centers for Medicare & Medicaid Services, 21% of nursing homes in the United States received five stars in overall ratings on a scale of 1 to 5. A random sample of seven nursing homes was selected. What is the probability that more than one of them received five stars?

A camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a defective sensor. Cutler Electronics received eight of these digital cameras. What is the probability that three or four of the cameras shipped to Cutler are defective?

According to the Mortgage Bankers Association, 11% of U.S. mortgages were delinquent last year. A delinquent mortgage is one that has missed at least one payment but has not yet gone to foreclosure. A random sample of eight mortgages was selected. What is the mean of this distribution?

Discrete random variables have outcomes that take on any numerical value as a result of conducting an experiment.

A listing of all the possible outcomes of an experiment for a discrete random variable along with the relative frequency of each outcome is called a discrete probability distribution.

The --------- of a discrete probability distribution measures the dispersion of each outcome of the random variable from the mean of the distribution.

The mean and the variance are equal for a ------- probability distribution.

According to LIMRA, 77% of husband-wife families with kids under 18 years old have life insurance. A random sample of six husband-wife families was selected. What is the probability that less than two families have life insurance?

A camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a defective sensor. Cutler Electronics received eight of these digital cameras. What is the mean of this probability distribution?

According to the Centers for Medicare & Medicaid Services, 21% of nursing homes in the United States received five stars in overall ratings on a scale of 1 to 5. A random sample of seven nursing homes was selected. What is the mean of this distribution?

The ounces of soda consumed by an adult next month are an example of a discrete random variable.

A camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a defective sensor. Cutler Electronics received eight of these digital cameras. What is the standard deviation of this probability distribution?

According to the Insurance Research Council, 14% of U.S. drivers are uninsured. A random sample of seven drivers was selected. What is the standard deviation of this distribution?

The mean of a discrete probability distribution needs to equal one of the values of the random variables.

Which of the following is not a condition of a discrete probability distribution?