744 Answered Questions for the topic Probability & Statistics

Probability & Statistics Algebra 1 Probability Probability Problems

05/31/15

I need help with this difficult word problem
Before the 1976, California license-plate numbers consisted of three numbers (for example, EGT 893). In the summer of 1976, however, the state ran out of numbers of this type and started issuing... more
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Probability & Statistics Algebra 1 Probability

05/30/15

Which of the following are independent pairs of events? Check all that apply.
A. Being a bad swimmer and drowning.   B. Watching television and winning the lottery.   C. Flipping two coins and having both show heads.   D. Being a good swimmer and winning the... more
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Probability & Statistics Math Algebra 2 Algebra 2 Question

05/28/15

Algebra 2 help please??
Consider the set x= { #, $, @, ^, *}1. Find the numbers of subsets there are for set X.2. Find the number of 4- element subset of set X.I am so confused, anything helps, thank you!!!
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Probability & Statistics Algebra 2 Algebra 2 Question Algebra 2 Help

05/28/15

Algebra 2 help please??
Consider the set x= { #, $, @, ^, *} 1. Find the numbers of subsets there are for set X. 2. Find the number of 4- element subset of set X.   I am so confused, anything helps, thank you!!!
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Probability & Statistics Probability Probability Problems

05/20/15

Probability Problem
You play a gamed e that requires rolling a six-sided then randomly choosing a colored card from a deck containing 3 red cards, 8 blue cards, and 6 yellow cards.  Find the probability that you will... more
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Probability & Statistics Probability Word Problem Word Problem Help

05/20/15

how many different ways can the letters PROBLEM be arranged? Considering all of the possibles arrangements of the letters, what is the probability of actually s
Need help! 
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05/19/15

what proportion of a normal distribution is within one standard deviation of the mean
how do i figure out what proportion of a normal distribution is within one standard deviation of the mean
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Probability & Statistics Probability

05/17/15

What is the probability??? (read description) ANSWER ASAP
A bag has 1 red marble, 4 blue marbles, and 3 green marbles. Peter draws a marble randomly from the bag, replaces it, and then draws another marble randomly. What is the probability of drawing 2... more
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Probability & Statistics

05/16/15

a biased die with faces numbered 1 to 6 is rolled once. the figures below give the probability
the figures below give the probability of obtaining each of the numbers on the die after a single roll. what is the probability of obtaining a 3 or 4. 1        2           3             4        ... more
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Probability & Statistics Algebra 2 Word Problem

05/14/15

help????????
This year, there are 26 students in Joe's class (it is a SMALL school). There are 20 boys, 8 students in Honors Math and 30% of the boys are in Honors Math. If one student is selected at random,... more
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Probability & Statistics Algebra 2

05/14/15

help????????
The probabilities that Sam gets an A in Physics is 12%, Judy gets an A in Physics is 40% and Paul gets an A in Physics is 98%. What is the probability that all three get an A in Physics?
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Probability & Statistics Algebra 2 Word Problem

05/14/15

help????????
You draw 3 cards from a standard deck of 52 playing cards. What is the probability that you get at least 2 face cards?
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Probability & Statistics Math Probability Math Help

05/03/15

Compute Pr(-1.54<Z<1.33)
Suppose that Z is standard normal random variable. Compute Pr(−1.54<Z<1.33).(If needed, round answers to 3 decimal places)
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Probability & Statistics Math Probability Math Help

05/03/15

Compute Pr(Z<-1.54)
Suppose that Z is a standard normal random variable. Compute Pr(Z<−1.54).(If needed, round answers to 3 decimal places)
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Probability & Statistics

04/30/15

In a driving experiment, 46 people ran over a traffic cone and 54 did not. What is the experimental probability of a person hitting a traffic cone?
In a driving experiment, 46 people ran over a traffic cone and 54 did not. It has to do with probability.
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Probability & Statistics

04/28/15

If 2% of skiers can injure themselves due to falls, What is the probability that exactly 3 out of 100 will injure themselves?
What is the probability no more than 5 out of 100 will get injured? What is the probability More than 3 of the next 100 will injure themselves? What is the probability that the first skier to be... more
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Probability & Statistics

04/28/15

Henry had a batting average of .0341.what is the probability that his first hit will not occur until his 5th at bat?
Henry has a batting average of .341.   What is the probability that his first hit will not occur until his 5th at bat? What is the probability that his forst hit will occur within his first 5 at... more
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Probability & Statistics Probability Permutations Combinations

04/20/15

How many different values are possible for the random variable Y?
involving drawing calculators from a box of working and broken calculators. Assume that the box contains 14 calculators: 12 that work and 2 that do not work. A sample of 3 calculators is selected... more
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Probability & Statistics Probability Permutations Combinations

04/20/15

How many different values are possible for the random variable X
Assume that the machine yields the item selected 70 percent of the time, and returns nothing 30 percent of the time. Three individuals attempt to use the machine. Let X be defined as the number of... more
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Probability & Statistics Probability Permutations Combinations

04/20/15

How many different values are possible for the random variable X?
involving the selection of two students from a committee of students. Assume that the committee is made up of 2 males and 5 females. Two are selected at random, and a random variable X is defined... more
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Probability & Statistics Probability Sets Conditional Probability

04/20/15

What is the expected value of the coin selected (in cents)?
Assume that the drawer contains 12 coins: 3 quarters, 5 dimes, and 4 nickels. One coin is randomly selected.What is the expected value of the coin selected (in cents)?
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Probability & Statistics

04/20/15

Athletic Probability
Approximately 35% of the walk-on athletes at a given school actually make the team, according to the athletic department. Determine the probability that more than 50% of the 25 walk-on athletes... more
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04/15/15

Explain "equally likely" in continuous uniform distribution using everyday items?
What is the best way to explain "equally likely" in continuous uniform distribution to an audience using tangible or everyday items?
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Probability & Statistics Probability Permutations Combinations

04/15/15

(1) What is the probability that she remembers to bring her briefcase every day in one week (5 days)?
about the professor who sometimes forgets to bring her briefcase to the office, but assume that, each day, the probability that she forgets the briefcase is 1/6. Assume that her forgetting is a... more
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Probability & Statistics Probability Permutations Combinations

04/15/15

What is the probability that at least one mouse is female, given that exactly one is gray?
Assume that you have 10 mice in the cage: 4 white males, 3 gray females, and 3 gray males. Two mice are selected simultaneously and at random, and their colors are noted.What is the probability... more
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