29 Questions for the topic probabilities

10/04/18

Suppose that P(E) = 0.8, P(F) = 0.6, and P(E ∩ F) = 0.48.
Two different airlines have a flight from Los Angeles to New York that departs each weekday morning at a certain time. Let E denote the event that the first airline's flight is fully booked on a... more
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09/30/18

probabilities
The probabilities that John will choose Physics, Chemistry and Biology in the summer semester are 0.4, 0.7 and 0.6, respectively. If John has decided to choose Physics, the probabilities of... more
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04/13/18

Assuming the cards in the deck are randomly distributed, what is the probability that Makayla draws an ace and does not replace it, and then draws another ace?
Makayla shows her friend Nicole a deck ofcards. Assuming the cards in the deck arerandomly distributed, what is the probabilitythat Makayla draws an ace and does notreplace it, and then draws... more
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03/08/18

Find the probability of correctly answering the first 2 questions on a multiple choice test if random guesses are made and each question has 5 possible answers
Probabilities 
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02/01/18

Another simple question for probability
 A packet contains a large number of flower seeds which look identical, but produce flowers of one of three colours, blue, pink or white. 1/4 of the seeds for use blue flowers and 2/3 produce pink... more
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02/01/18

Very simple question for Probability!
 Theresa is going to sit for the O-level additional mathematics and elementary mathematics examinations at the end of the year. Theresa estimates that she will definitely pass both the subjects and... more
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01/26/18

Probability
A bag contains 15 identical marbles. There are 7 red, 3 blue and 5 yellow marbles. A marble is picked out at random and not replaced. A second marble is then picked out at random and not... more
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01/26/18

Another probability question
a pupil travels to school either by MRT or by bus. Th probability that the pupil will be late for school is 1/12 if he travels by MRT and 1/9 if he travels by bus.    a) if he travels by bus on... more
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10/12/17

Which is the probability that the customer gets at least 25% of red balloons?
A factory produces balloons of different colours, being the proportion of red balloons 20%. A customer ordered 250 balloons asking for at least 25% of red balloons. Which is the probability that... more
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08/15/17

What is the probability of winning a carnival prize in 30 spins if a prize is won every 7 spins?
At a carnival, Erin observed a spin-the-wheel game. She noted that in 30 spins, a prize was won 7 times. What is the probability of winning a prize?
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03/27/17

Probabilities
Approximately 3% of the eggs in a store are cracked. If you buy two dozen eggs, what is the probability that no more than two of your eggs are cracked?
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03/13/17

k students get off a bus to n different areas
Hey there, I'd like to receive some insight in the following problem.   A bus starts having k students in it and it stops by N stations/stops. a. Create the probability space for all the... more
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02/20/17

Find the probability of drawing a red face card on the first draw,replacing it and drawing a black card on the second draw
I dont know know the probability of drawing a red face card on the first draw,replacing it and drawing a black card on the second draw  
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12/29/16

Find the probability
Two cards are drawn without replacement from an ordinary deck. Find the probability that two queens are drawn.
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12/29/16

How can I solve this Question? HELP ME
The given table indicates the transactions for one teller for one day. Letting Upper E1 represent "cashing a check" and Upper E2 represent "making a deposit," express P (E1'|E2') in words and find... more
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12/29/16

What is the conditional​ probability?
Two cards are drawn without replacement from an ordinary deck, find the probability that the second is not a kingnot a king, given that the first is not a kingnot a king.What is the conditional... more
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12/05/16

NEED ANSWER TO PROBABILITY QUESTION ASAP
there are 50 students who were asked to choose printed books over digital ebooks or both or none. what is the probability of every choice getting two or more students?
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09/27/16

if 5 of these CD's are randomly selected for testing, what is the probability that the entire batch will be accepted?
with one method of a proced called acceptance sampling, a sample of items is randomly selected without replacement and the entire batch is accepted if every item in the sample is okay. The ABcD... more
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04/18/16

How many different fragments of a polymer of 383 monomers can I have, assuming that each fragment can be as small as 2 monomers?
I have a polymer with 383 different monomers lined up in a row. How many different fragments of such polymer can I have, assuming that each fragment can be as small as 2 monomers? Also, suppose my... more
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04/12/16

if 64 cookies are in a jar 37.5% are different
how many cookie are different?
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04/07/16

Eighty percent of all California drivers wear seat belts. if 3 drivers are pulled over, what is the probability that all would be wearing their seat belts?
Round the percentage to the nearest 10th
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03/02/16

Probability of Biased coin
A biased coin has a probability of getting head of P(H) = 1/pi and a probability of a tail of P(T) = 1/sqrt(3)And a probability of landing on edge of P(E) = 1 – 1/pi – 1/sqrt(3) How could you... more
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02/23/16

Probabilities!
A batch of 350 raffle tickets contains four winning tickets. You buy four tickets. What is the probability that you have (a) no winning tickets? (b) all of the winning tickets? (c) two winning... more
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02/23/16

Probabilities!
A random sample of seven bumblebee bats is selected from the study. Find the probability that the mean weight of the sample is between 2.1 grams and 2.7 grams.   Refers to the last question I... more
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02/23/16

Probabilities!
In  a  study  of bumblebee  bats,  one  of  the  world’s  smallest  mammals,  the weights were normally distributed, with a mean of 2.0 grams and a standard deviation  of  0.25  gram.  Find  the... more
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