Exam 5: Probability, Normal Distributions, and Z Scores

The probability of a student attending every college class is p = .26.The probability of a student attending every college class and earning an A is p = .22.Hence,the probability of a student earning an A,given that he or she attends every college class,is

A researcher determines the probability that a research study will reveal something new is p = .80.What is the probability that the study will reveal something new or not reveal something new?

Which rule states that when two outcomes are mutually exclusive,the probability that either one of these outcomes will occur is the sum of their individual probabilities?

A therapist goes through her records and finds that 200 of her 400 patients showed significant improvement in mental health over the past year.Hence,the probability of her patients showing significant improvement in mental health is

The probability that a parent rewards a child with a dessert for eating a healthy meal is .07.Assuming independent outcomes,the probability that two parents reward their child's healthy eating equals

The mean of a probability distribution is called the

Probability allows us to make predictions regarding:

If a complimentary outcome has a 1 in 10 chance of occurrence,then the probability of that outcome is p = .10.

Below is the probability distribution for the number of times students had to take the same exam before passing it.If a student must pass the exam in two tries of less to pass the class,then what is the probability of passing the class?

In a game,the probability of winning money is p = .16,the probability of losing money is p = .54,and the probability of breaking even is p = .30.What is the probability of winning or losing money in this game?

The probability of an outcome can be any positive value.

The probability that someone in the human population has blood type AB is about p = .08;the probability that someone has blood type O is about p = .25.Knowing that each individual can have one and only one blood type,what is the probability that a person has an AB or O blood type?

Probability distributions display the probability of each possible outcome for a given random variable.

A researcher records the following data for the number of bids made on a sample of items sold at an auction.Based on the table,what was the probability that an item had 7 bids made on it?

The multiplicative rule is used for independent outcomes.

Bayes' theorem is often applied to a variety of ________ probability situations,including those related to statistical inference.

A researcher records the number of job openings among small businesses.She finds that the probability that a small business has 0 job openings is p = .22;1 job opening is p = .45;2 job openings is p = .08;and 3 job openings is p = .25.What is the probability that a small business has at least 2 job openings?

Below is the probability distribution for random variable x.What is the standard deviation of this probability distribution?

Two outcomes are mutually exclusive when the probability of one outcome does not affect the probability of the second outcome.

If there are 13 heart cards in a deck of 52 cards,then what is the probability of selecting one heart card on a single draw from the deck of cards?