744 Answered Questions for the topic Probability & Statistics

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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Probability & Statistics

02/06/18

Among 27-32 year olds, 32% say they have written an editorial letter while under the influence of alcohol. Suppose 27-32 year olds are selected at random.
(A) What is the probability that at least one has NOT written an editorial letter while under the influence of alcohol? (B) What is the probability that at least one has written an editorial letter... more
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Probability & Statistics Probability Permutations Math Problem

02/05/18

what is the answer to 13p12=
what is the answer 
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Probability & Statistics Algebra Problem Solving Finite Mathematics

02/04/18

Finite Math Question
A store sells two types of toys, A and B. The store owner pays $8 and $10 for each one unit of toy A and B respectively. One unit of toys A yields a profit of $2 while a unit of toys B yields a... more
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Probability & Statistics

02/02/18

A bag contains four number blocks
A bag contains 4 number blocks. If you were to pick ONLY THREE blocks from the bag, what are all possible outcomes?   Blocks consist of: 8 0 2 5 
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Probability & Statistics

02/01/18

Probability for 5 numbers given qualities
If the digits 7, 8, 2, 3, and 0 are used exactly once, to form a three-digit positive integer and a two-digit positive integer that differ by exactly 288, what is the sum of the three digit and two... more
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Probability & Statistics Probability Mathematics

02/01/18

(Easy) Probability of boxes and marbles
 Box A contains two red marbles and six blue marbles.   Box B contains five red marbles, three yellow marbles and six blue marbles. Box C contains eight red marbles, six yellow marbles in 4 blue... more
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