02/17/22
Discrete Math Question
Suppose you are playing 5-card draw poker- the deck has the usual 52 cards and you are dealt 5. What is the chance that you are dealt three aces (but not 4 and not an additional pair)? Suppose you...
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08/21/21
I don't understand these?!!!! Study Guide for Final Exam
Twenty students took a test. The following are the scores.77 59 84 83 70 80 83 82 85 92 97 88 87 86 99 93 79 63 81 68 Answer/Find the following for the above sample
Mean: ___________
Median:...
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08/21/21
Study Guide for final Exam
(10) According to government data, the probability that an adult was never in a museum is 15%. A random sample of 25 adults were surveyed.
What is the probability that exactly three adults were...
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08/16/21
Continuous Probability Distributions, Normal Distribution: If 500 pupils' scores that were gathered are within a normal distribution..
If 500 pupils' scores that were gathered are within a normal distribution, and that the mean is 70, the variance is 16, and the standard deviation is 4:1) At random, a pupil was chosen. What is the...
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08/15/21
The question is about probability and about actuarial statistics
The question has 3 parts -Question- In a class of 92 students probability of you getting to the top is half of any other student. What is the probability of you getting to the top ?These 92...
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04/12/20
Write an equation for a rational function
Vertical asymptotes at x=2 and x=1x intercepts at x=6 and x=3y intercept at 3
Probability Without Replacement
Bruno has 90 marbles. Of those, 45 are broken and 75 are painted red. If he randomly picks marbles one at a time, what is the probability that the first marble he gets is painted red, the second...
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07/21/19
Stats - see below
A machine packs nails in cartons. The number of nails in a carton is approximately normally distributed with a mean of 700.5 and a standard of deviation of 20. Find the probability that a carton of...
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07/21/19
Monthly compounding word problem
Jane Roznowski wants to invest some money now to buy a new tractor in the future. If she wants to have $325,000 available in 6 years, how much does she need to invest now in a CD paying 4.85%...
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07/21/19
How reliable is my sample scores?
How confident can I be that my sample score is representative? For example, in a 306 bets, 201 (65.7%) were correct...but how confident can I be that this betting strategy will hold? Or put...
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07/21/19
What is the expected number of dice one needs to roll to get 1,2,3,4,5,6 in order?
If I have a fair die and throw it until I get a run of 1,2,3,4,5,6 in order, how many times on average must I throw the dice?
06/11/19
Find l2 using binomial pdf
Assume that a procedure yields a binomial distribution with a trial repeated n=5 times. Use some form of technology to find the cumulative probability distribution given the probability p=0.581 of...
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06/03/19
How can I calculate "most popular" more accurately?
I'm developing a website at the moment.
The website allows users to "rate" a post from 0 to 5.
Posts can then be displayed in order of popularity.
At the moment, my method of calculation is...
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The Fundamental Counting Principle
When a multiple choice question has 5 choices, the probability of getting question right by randomly guessing is 1/5. What is the probability you would get a question wrong by guessing? What is the...
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04/26/19
understanding probability
A bag of balloons contains 3 red balloons, 10 green balloons, 15 yellow balloons, and 7 orange balloons. What is the probability that a randomly selected balloon would be green or...
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04/24/19
How would you completely factor: a(x) =8x^3 - 12x^2 + 18x -27 without knowing any of the roots?
04/24/19
Stats/ curious die
A peculiar die has the following properties: on any roll the probability of rolling either a 1, a 5, or a 4 is 1/2, just as it is with an ordinary die. Moreover, the probability of rolling either...
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04/23/19
If 2x-6=22+4 then what is x?
help me solve this
For the experiment described below, let x determine a random variable, and use your knowledge of probability to prepare a probability distribution.Five coins are tossed and the number of heads is...
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