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... more

01/11/22

Determine the infinite limit

lim->0 = x-1/x^2(X+2)lim->2- = x^2-2x/x^2-4x+4

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:... more

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... more

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... more

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... more

10/05/20

Find limit multiple choice

limx->7 (x2-49)/(x+7)=a. -7b.-14c.14d.0

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... more

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... more

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%... more

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... more

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?

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... more

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... more

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... more

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... more

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... more

04/24/19

What is the inverse of f(x) =x^3 +1?

04/23/19

If 2x-6=22+4 then what is x?

04/23/19

What is the domain of (tanx - tan^(2) x) ^(1/2)?

04/19/19

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... more

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