The Centers for Disease Control (CDC) estimates that 0.6% of Americans have AIDS. The HIV-1 tests correctly diagnose the presence of HIV in 99% of the persons who have it and correctly diagnose its...

The Centers for Disease Control (CDC) estimates that 0.6% of Americans have AIDS. The HIV-1 tests correctly diagnose the presence of HIV in 99% of the persons who have it and correctly diagnose its...

there are 4 cups. each cup holds 1 black ball and 1 white ball. you draw one ball from each cup. what is the probability of drawing at least one black ball?

A city council consists of six Democrats and eight Republicans. If a committee of seven people is selected, find the probability of selecting four Democrats and three Republicans.

A group consists of six men and seven women. Six people are selected to attend a conference. a. In how many ways can six people be selected from this group of thirteen ? b. In how many ways...

At a factory that produces pistons for cars, Machine 1 produced 567 satisfactory pistons and 243 unsatisfactory pistons today. Machine 2 produced 810 satisfactory pistons and 90 unsatisfactory...

f you are dealt 4 cards from a shuffled deck of 52 cards, find the probability that all 4 cards are diamonds.

A city council consists of six Democrats and eight Republicans. If a committee of seven people is selected, find the probability of selecting four Democrats and three Republicans.

two coins and one six sided number cube are tossed together. what is the probablilty of getting two heads and a four that

A short multiple choice test has four questions. Each question has five choices, exactly one of which is right. Willie Passitt has not studied for the test, so he guesses answers at random. What is...

Ya I'm in is collecting data for her environmental science class. She catalogued all the trees in an acre of the nature preserve. She found 8 oak, 4 pecan, 2crepe and 2 magnolia trees. If the nature...

A penny, a nickel, a dime, and a quarter are tossed. What is the probability of obtaining four headsfour heads on the tosses?

What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)?

You toss a circular coin randomly onto the Adversary’s† infinite checkerboard. That is, it is as likely to turn up in one location as any other location. The coin’s diameter is exactly half the length...

Suppose two real numbers, b and c, are randomly chosen from the interval [−1, 1]. In each case, any real number in the interval is as likely to be chosen as any other, and it is possible for the two...

What is the probability that all of the cards selected are diamonds?

A bag contains 12 red marbles,5 yellow marbles, and 15 green marbles. How many marbles must be added to the 32 marbles already in the bag so that the probability of randomly drawing a red marble is...

Mr Switch has a dice and a coin in his possession.He is required to toss the coin and roll the dice simultaneously in a competition.If he obtains a head and a prime number, he wins a grand prize....

Of the 24 socks in a drawer, there are three times as many black socks as brown socks. Some of the black socks are plain and some are patterned. There are five times as many plain socks as there are...

a. Winning exactly 1 time b. winning exactly 4 times

Donald, Douglas, and Duane are playing a dice game. A pair of dice is tossed and the winner is determined by the sum on the dice. If the sum is 2, 3, 11, or 12, Doland wins. If the...

Wesley L.

Premier MIT Math Tutor and SHSAT/SAT/ACT Specialist

New York, NY

5.0
(228 ratings)

Amaan M.

Math/Economics Teacher

New York, NY

5.0
(68 ratings)

John P.

Math, Science, Technology, and Test Prep Tutor

Fort Lee, NJ

5.0
(668 ratings)