282 Answered Questions for the topic Probability Problems

Probability Problems

05/13/16

Math Help!!!
3) A paper bag contains 20 slips of paper. Eight of them are blue and are numbered from 1 to 8. Twelve of them are orange and are numbered from 9 through 20. One card is picked from the bag.a.)... more
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Probability Problems

05/06/16

Did I do this probability question correctly?
A box contains 3 marbles, 1 red, 1 green, and 1 blue. Consider an experiment that consists of taking 1 marble from the box, then replacing it in the box and drawing a second marble from the... more
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Probability Problems Permutation And Combination

05/02/16

I need help answering a few simple math problems related to permutations and probability
Question 1: How many words can you make from the letters Texas if repeats are not allowed? Question 2: How many words can you make from the letters Texas if repeats are allowed? Question 3: What... more
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Probability Problems

04/29/16

a weather forecast says that there ia a 82% chance of rain tonight. Find the odds in favor of rain
this is a probability problem has to do with math 
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Probability Problems Math Probability Math Question

04/25/16

The question is in the description.
Given a grid with 15 sections, determine how many sections in the grid need to be shaded so the probability of a point chosen at random in the shaded area is exactly 0.8. Explain your reasoning.
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04/24/16

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
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Probability Problems

04/23/16

probabilty
Hi there can someone help me with this  rule 1: the password must contain at least7 characters rule 2: it must contain at least 3 out of the following four character groups  english upper case... more
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Probability Problems Probability Math Help Math Word Problem

04/20/16

Probability calculations
Probability calculations – exactly one occurrence You are looking for a job. Eventually you get six interviews. In each case you are one of four final candidates for the respective job. Let us... more
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Probability Problems Probability

04/20/16

help with question. I dont understand the differences.
What is the difference between the C and P? The only thing I could think of is P stands for probability but no idea what C stands for. I believe it will be either B or C since there is only one way... more
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Probability Problems Probability Z Score

04/20/16

help with a problem and is there any way to check my answer so i am not double guessing?
An elevator has a stated maximum capacity of 12 people or 2004 pounds. If 12 people have weights with a mean greater than (2004/12) = 167 pounds, the capacity will be exceeded. Assume that weights... more
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Probability Problems Probability

04/20/16

Would i be right?
If events A and B are mutually exclusive events, each with non-zeroprobability, then which of the following is true:a. P(A ∩ B) = P(A) + P(B)b. P(A ∪ B) = P(A) + P(B)c. P(A) – 1 = P(B)d. P(A) =... more
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Probability Problems

04/18/16

A card is drawn from a standard deck of 52 cards. Find the probability that the card is either a five or heart
I need help with the problem and how to get the answer 
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Probability Problems Probability Probability & Statistics

04/18/16

Probability
In a b olt factory 30%, 50% and 20% of pro duction is done on machine s I, I I and I I Iresp ectively. It is known that 4%, 3% and 5% of the output of these resp ective machinesis defective.(a)... more
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04/11/16

probability / statistics question?
say that you were taking a multiple choice test and the teacher says you only have 30 seconds left. however, you have 5 questions left that you haven't answered. you have no time to even look at... more
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Probability Problems

04/11/16

A jar contains 3 red marbles, 5 green marbles, and 7 black marbles. First, a marble is taken and put into the jar again. Then another marble is drawn.
 What is the probability of choosing a red marble and a black marble? A. 3/7B. 1/21C. 7/75D. 1/10
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04/11/16

Probability Question
We have a CDF             {0  if  y< 0 F(y) = {Y^4   if  0<= y <= 1           { 1   if  y>1   The Z transformation is: Z = 3Y^2 + 2,2 ≤ z ≤ 5   My question is: I dont... more
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Probability Problems

04/07/16

A coin is tossed four times. Let X denote the number of times a head appears. What would be the expected value of X?
Random      |Probability(p) |            A. zero(0)Variable(x)  |                    |            B. 1 ------------- |--------------- |            C. 2        0         |        1/16      |      ... more
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Probability Problems

04/05/16

The scores on a practical test are normally distributed. If the test has a mean of 200 and a standard deviation of 20, what is the probability that a person who
A. 68%B. 98%C. 79%D. 99%
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Probability Problems Probability & Statistics

04/04/16

Twenty-five percent of Americans are college graduates. You survey a random sample of fifteen Americans.
What is the probability that: a. Exactly three of them are college graduates? b. Between two and five (inclusive) of them are college graduates? c. More than seven of them are college graduates?
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Probability Problems

04/04/16

How many five-digit numbers can be formed from the digits,2,3,4,5,6,7,8, and 9, if no digit may be repeated?
Discret Math and its Application
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Probability Problems Probability & Statistics

03/28/16

did i solve this correctly?
You can flip a coin three times. a) what is the probability of getting heads on only one of your flips? b) what is the probability of getting heads on at least one flip?   So this is how i got... more
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Probability Problems

03/28/16

can someone help me with this probability question.
A fair coin is flipped 9 times. What is the probability of getting exactly 6 heads?So i figured that 29=512 but that is as far as i can get. Can someone please help me.
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03/27/16

Probability Question
X has the following pdf   x       p(x) -----|-------  10  |0.40  15  |0.15  17  |0.20  21  |0.15  22  |0.10   a)What is the moment generating function for X b)Use your Moment Generating... more
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03/27/16

Probability Question
According to an airline report roughly 1 piece of luggage out of every 200 that are checked are lost. Suppose that a frequently flying businesswoman will be checking 120 bags over the course of the... more
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03/27/16

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
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