788 Answered Questions for the topic Probability & Statistics

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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Probability & Statistics Statistics Probability

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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Probability & Statistics Statistics Probability

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... more
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Probability & Statistics Statistics Probability

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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Probability & Statistics Algebra 1

03/26/18

A jar contains several marbles: 4 pink, 3 black, 5 purple, and 8 white. What fraction would represent white marbles?
 reduce the fraction
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Probability & Statistics

03/24/18

f(x) = c (9/10)^x-1 for x = 1,2,... . (a) Determine the constant c.
I understand that the summation of f(x)=1 where it can only be 1 because thats the entire sample space
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Probability & Statistics

03/19/18

75% of her free-throws. If continued at this free-throw rate, what is the probability that she will make the next two free-throws in the next game?
I don't know how to do this please help!
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Probability & Statistics

03/19/18

1 If the r-value or correlation coefficient of a data set is 0.827 what is the coefficient of determination to three decimal places? a.0.827 b.0.684 c.0.627 d.
i have tried to answer this question 30 times and i have came up with the wrong answer every time i am so confused and  I dont know how to do this problem
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Probability & Statistics Statistics Probability Combintions

03/18/18

ind the probability of being dealt seven clubs and three cards with one card of each other remaining suit in 10​-card poker.
The probability is____  Round to 3 decimals
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Probability & Statistics Probability

03/18/18

Probability
If a jockey with a strike rate of 14% has 4 rides at a meeting, what is the probability that the jockey will ride 1 winner? This is without taking the odds into account. Please provide your... more
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Probability & Statistics

03/17/18

Password security
Assume a password 2 characters in length. The bank of characters available consists of capital letters, lower case letters, 10 punctuation symbols, and 10 numbers: a total of 72 choices for each... more
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03/17/18

Probability Question
Question: Homer and Marge play a game by taking turns rolling a standard six-sided die,starting with Homer, until there occurs a sequence of k or more 4s immediatelyfollowed by a 5 or 6 (e.g. 45,... more
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Probability & Statistics Math Statistics Probability

03/12/18

What is the probability of selecting a jury of all​ students?
The grade appeal process at a university requires that a jury be structured by selecting seven individuals randomly from a pool of eleven students and eight faculty.     (a) What is the... more
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Probability & Statistics

02/26/18

From 4 red, 5 green, and 6 yellow apples, how many selections of 9 apples are possible if 3 of each color are to be selected?
 how many of the 9 apples are they possible to be found if only 3 are to be selected  
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Probability & Statistics

02/25/18

Probability
What is the probability of rolling either a 5 or a 4 with die that has nine sides?
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Probability & Statistics Statistics Empirical Rule

02/23/18

a mean of 444 and a standard deviation of 52 what percentage of students scored between 288 and 600 on the exam?
this problem includes z charts and finding the percentage
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02/17/18

In a statistics class of 13 sophomores, 12 juniors, and 8 seniors, 5 of whom are male sophomores, 6 of whom are female juniors, and 4 of whom are male seniors..
Question: What is the probability of randomly selecting a junior or a senior?
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Probability & Statistics Probability Problems Advanced Statistics

02/17/18

What is the probability of rolling a pair of dice and getting a sum of three?
Answer choices: 2/6 1/36 1/6 2/36
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Probability & Statistics

02/16/18

What does this probability question mean ?
Five balls labelled 1,2,3,4,5 are placed in a urn. Two balls are randomly selected from the five and their numbers noted.Find the probability distribution of the following :    1. the largest of... more
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Probability & Statistics Algebra 1

02/12/18

Probability
There are 11 members on board of directors. If they must form a subcommittee of 3 members, how many subcommittees are possible?I’m still unsure of this problem because a tutor suggested that there... more
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Probability & Statistics

02/12/18

Give your answer as a decimal correct to three significant figures.
A bag of sweets contains 5 chocolates(C), 10 toffees(T) and 7 licorice(L). Amy takes a sweet from the bag and eats it, then selects a second one and eats that. What is the probability that she eats... more
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Probability & Statistics

02/11/18

Determine whether the events are independent
In a city, 13% of the people drive Cadillacs and 25% of business executives drive Cadillacs. Are the events “person drives a Cadillac” and “person is an executive” independent? Yes or no.
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Probability & Statistics Data

02/10/18

Can a skewed distribution still be considered a normal distribution?
Can a skewed distribution still be considered a normal distribution? My data shows a normal bell curve with symmetric center but has a longer left tail. Would this still be considered a normal... more
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