44 Answered Questions for the topic Conditional Probability

What is the conditional probability that B does not occur given that A does not occur?

The probability of A is 0.25. The conditional probability that A occurs given that B occurs is 0.25. The conditional probability that B occurs given that A occurs is 0.4. (a) What is the... more

Working on this problem: "If P(A) =.7, P(B) =.4 and P (A intersect B) =.2, find P (~B|~A).

I know P (~A) is .3 and P (~B) is .6 What next?

If ​P(B)=0.4​, P(A|B)=0.5, P(B′​)=0.6, and​ P(A|B′)=0.7, what is P(B|A)?

Statistics probability problem. I could really use some help figuring out how to solve this.

probability

I have 7 letters and 6 possibilities with repetition. so that is 7^6 but now they ask me how many word possibilities will not contain one of the letters, how many words will contain one of the... more

Conditional Probability

If two cards are drawn without replacement from an ordinary deck, find the probability of a  king of any suit and a 2 of clubs being drawn. The probability of a king of any suit and a 2 of clubs of... more

Conditional Probability: Are my answers correct?

A certain virus infects one in every 200 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have... more

I cannot seem to get one portion of this problem right.

An experiment consists of two independent trials. The outcomes of the first trial are A, B, and C, with probabilities of occurring equal to 0.2, 0.6, and 0.2, respectively. The outcomes of the... more

Conditional probability

if a single fair die is rolled find the probability that the number rolled is a 5 Given that it is odd

What is the probability that a student takes geography given that the student is taking environmental science.

In a school, the probability that a student takes environmental science and geography is 0.25. The probability that a student takes environmental science is 0.72. What is the probability that a... more

If a marble is chosen at random, which of the conditional probabilities is larger, P(red|large) or P(large|red)? URGENT

A jar contains 11 large red marbles, 4 small red marbles, 8 large blue marbles, and 6 small blue marbles. If a marble is chosen at random, which of the conditional probabilities is larger,... more

select a circle

select a circle . these are in circles...1,2,3,4,5,6   Assume that one circle is selected at random and each circle is equally likely to be selected. Determine the probability of selecting.   a... more

Conditional Probability & The Multiplication Rule

68% of the citizens approve of a governor. Only 47% of the citizens approve of both the governor and the lieutenant governor. If a randomly selected citizen approves of the governor, what is the... more

Conditional Probability & The Multiplication Rule

If the probability of winning a carnival game is 3/7 and you play the game two times, what is the probability that you will win both times or you will lose both times?

Conditional Probability Multiplication Rule Help

68% of the citizens approve of a governor. Only 47% of the citizens approve of both the governor and the lieutenant governor. If a randomly selected citizen approves of the governor, what is the... more

Conditional Probability Multiplication Rule Help

Suppose three cards are drawn at random from a standard deck. What is the probability they are all face cards?

Conditional Probability & The Multiplication Rule Help!

A card is drawn at random from a deck. What's the probability that it is a jack given that it is a face card?

Conditional Probability & The Multiplication Rule

What is the probability that a rolled die is a 3 given that it is:a) odd?b) even?I really don't understand this, and how to solve this using conditional probability and the multiplication rule. Any... more

Billy takes two tests in his probability and statistics class.

The probability that Billy would pass at least one test is 0.9. The probability that he passes both tests is 0.7. The tests are of equal difficulty (that is, the probability that Billy passes test... more

If you are dealt two cards successively from a standard 52 card deck

, with replacement, what is the probability of drawing a face card second given a face card was drawn first?

Medical Testing & Conditional Probability

A certain genetic condition affects 5% of the population in a city of 10,000. Suppose there is a test for the condition that has an error rate of 1% (i.e., 1% false negatives and 1% false... more

Two aces problem !

A bridge hand has been dealt. Are the following two conditional probabilities equal? If a given hand has an ace, what is the probability that the given hand has a second ace? Given that the hand... more

multiple choice exam where probability of correct answer is different from if you know it or gamble

A student takes a multiple-choice exam. Suppose for each question he either knows the answer or gambles and chooses an option at random. Further suppose that if he knows the answer, the probability... more

Probability

Of a group of children, 0.4 are boys and 0.6 are girls. Of the boys, 0.7 have brown eyes; of the girls, 0.4 have brown eyes. A child is selected at random from the group. (a) Find the probability... more

Conditional Probability

In a second-semester English class, 40% of the students are sophomores and the rest freshmen; 25% of the sophomores are repeating the course and 15% of the freshmen gained admission to the course... more
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