744 Answered Questions for the topic Probability & Statistics
Probability & Statistics
05/16/18
Is probability of getting an A on a test conditional probability
Don’t have any
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Probability & Statistics
05/15/18
the batting order for eight players on a ten person team?
Permutations and cominations
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Probability & Statistics
05/14/18
Probability again
I dont’ quite understand how to go at this one, I feel like ther’s Not enough info in the question! Any help is greatly appreciated. According to the U.S. National Center for Health Statistics,...
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Probability & Statistics
05/14/18
Question on probability
I can’t seem to figure This one out. I feel like it’s easier than I’m making it out to be. I’m lost though for sure. Any help is greatly appreciated.
In a particular neighborhood of 150...
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Probability & Statistics Statistic
05/14/18
mean = 98.2 standard deviation = 0.62
mean is 98.2. standard deviation is 0.62. if one person is randomly selected, find the probability that the person's body temperature is at least 97 degrees
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Probability & Statistics
05/06/18
in this game what is the probability of dealt Black??
In a standard deck of 52 playing cards, there are 26 cards that are Black. The remaining cards are Red (notBlack). Consider an experiment where the deck is properly shued and a single card is...
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Probability & Statistics
05/06/18
What are the expected winnings for a person buying one ticket?
A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 10000 tickets are sold at 25 cents each, find the expected winnings for a person buying 1 ticket
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Probability & Statistics
05/03/18
Find the probability that fewer than 16 are satisfied
A poll reported that 70% of adults were satisified with the job the major airlines were doing. Suppose 20 adults were selected at random and the number who are satisfied are recoreded. What is the...
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04/28/18
Probability of using the same key
A cipher has 365 different keys. Each day, a key is chosen (uniformly) at random from the 365 keys. After how many days is the chance of any key being reused greater than 50%?
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Probability & Statistics
04/25/18
How many choices does the coach have when pick
At a middle school, there are 5 students on the chess team. The coach will pick 2 students to play the next game. How many choices does the coach have when picking the two students?
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Probability & Statistics
04/19/18
What is the probability that a 5 appears at least 2 times if a fair die is rolled 10 times
What is the probability that a 5 appears at least 2 times if a fair die is rolled 10 times
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Probability & Statistics Probability
04/19/18
Probability
There are 3 flavours to choose from, 2 mango, 4 vanilla and 6 cherry. A person picks out three flavours at random, what’s the probability of them picking vanilla 3 times
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04/12/18
100 Numbered Balls in a Bag
Scenario: I have 100 numbered balls in a bag and number (38) is chosen to be the lucky prize ball. Question: The balls are drawn from the bag one at a time, what is the probability that number 38...
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Probability & Statistics
04/12/18
Max's parents are told that their newborn son falls at the 95th percentile. How much does Max weigh?
need help answering
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04/11/18
Probability help! Die & bag of blocks!
Noreen is playing a game that has a bag containing two wooden blocks where one is yellow the other is green. to play the game she rolls and eight sided die, if a 12367 or 8 is rolled, she blindly...
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Probability & Statistics
04/11/18
In a residental surburb 60% of all households get internet service from a local cable company, 80% get television from that company and 50% get both services
What is the probability that a randomly selected household subscribes to atleast one of these two services from the local company
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Probability & Statistics
04/10/18
Mary called sun taxi for a ride. The cost of a ride is a fixed cost $4.60 and $2.50 per kilometre. What is the fare for 11 km
i just need help with the question honestly, for a test.
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Probability & Statistics
04/09/18
At a factory that produces pistons for cars, Machine 1 produced satisfactory pistons and unsatisfactory pistons today. Machine 2 produced satisfactory pis
At a factory that produces pistons for cars, Machine 1 produced 392 satisfactory pistons and 98 unsatisfactory pistons today. Machine 2 produced 360 satisfactory pistons and 240 unsatisfactory...
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04/09/18
Probability question for Stats class help.
Suppose that we have 15 marbles in a jar. 7 of them are green, 2 of them are blue, and the rest are red. 1)What is the probability that the first marble we draw is blue?2)Suppose you drew a blue...
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Probability & Statistics
04/07/18
suppose that the probability is 0.06 that a car stolen in Lahore will be recovered. find the probability that 4 of 10 cars stolen in Lahore will be recoverd.
This question is asked in the book of statistics of part one.
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Probability & Statistics Statistics
04/04/18
what is the probability
Seven qualified students apply for a scholarship, but only five scholarships, (equal in value) can be given. If the 5 scholaarships are all different, how many ways can 5 winners be selected?
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03/30/18
Whats the probability that at most 3 bottles in this sample will be under-filled?
under-fill rate 20%
15 randomly selected two-liter bottles
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03/28/18
If 6 digits ranging 0 to 9 are randomly generated, what are the odds that at least 4 of the digits are the same.
Can someone at least give me a few tips on how to work this out? I don't even know if i should treat this like a combination or permutation.
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03/27/18
If you select a student at random, what is the probability that the student made an A or failed the test?
A class of 22 students take a statistics exam. Four students make an A, 3 students make a B, 6 students make a C, 2 students make a D. The rest of the students fail. If you select a student at...
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03/27/18
What is the probability of drawing the marbles in description?
A bag of marbles has 4 green, 6 blue and 9 red. If 4 marbles are drawn out of the bag without looking, what is the probability that there will be 3 red marbles and 1 blue marble?
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