07/27/25

F-distribution P-value
How do you find the p-value for f-distrubutions without using a table? I can't get a correct answer using the table and I can't figure it out.
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04/16/23

Calculus 2 - Improper integrals determining if they converge.

The integral is from 2 to ∞ ∫ x^2/√(x^7)-1
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02/08/23

What is the probability of a disaster occurring?
You have 11 cards (2 - 12) and 2 dice (6-sided) you draw 3 cards randomly and roll the dice. What is the probability of the sum of the 2 dice equaling any one of the three cards causing a disaster?
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02/01/23

Assume that Pr[A′]=0.4 , Pr[B]=0.6 , and Pr[A′∩B]=0.3. Find probability of following events:
(1) Pr[A∩B] =(2) Pr[A∪B] =(3) Pr[A′∪B] =
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01/21/23

How many natural numbers m such that: 2022-=m-1(mod m)
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01/21/23

The sum of several integers has a remainder 5 in division by 6. Find the remainder of the sum of the third powers of these numbers in division by 6
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01/21/23

Solve for x: 15x=9(mod27)
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12/23/22

true or false integral area question

Using the Trapezoidal Rule with a step size of 0.5, an approximation for the integral . true or false
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11/27/22

need help with math

I've been stuck on these problems for a while.Use the given transformation to evaluate the integral. ∫∫R 8xy dA, where R is the region in the first quadrant bounded by the lines y = 1x/3 and y = 2x... more
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11/04/22

Probability Playing Cards
Three cards are drawn from an ordinary deck of playing cards. You flip the last two of them and find that both are spades. What is the probability that also the first card is a spade?
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10/15/22

What is the answer?
Find h'(-3) if h = f · g, f(x)= -5x2-9 and the equation of the tangent line of g at -3 is y = -3x-1
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10/11/22

Could you help me with this? The question is too long to fit here.
The officers of a high school senior class are planning to rent buses and vans for a class trip. Each bus can transport 49 students, requires 2 chaperones, and costs ​$1,400 to rent. Each van can... more
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10/06/22

Sample sizes question

Two samples are taken with the following numbers of successes and sample sizesr1 = 20  r2 = 30n1 = 50  n2 = 52Find a 85% confidence interval, round answers to the nearest... more
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09/28/22

The lower bound is ?
A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample​ variance S^2 is determined to be 12.1.a- Construct a​ 90% confidence interval for... more
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09/28/22

An ordinary fair die was rolled 100 times...
An ordinary fair die was rolled 100 times. The results were summarised in a frequency table and the mean score was calculated to be 3.46. It was later discovered that the frequencies, 15 and 20, of... more
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09/26/22

Calulus 2 Counting Pie
After another gym class you are taksed with putting the 14 identical dodgeballs away into 4 bins. This time, no bin can hold more than 6 balls. How many ways can you clean up?
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09/19/22

STATS QUESTION In the game of Parcheesi each player rolls a pair of dice on each turn.
In the game of Parcheesi, each player rolls a pair of dice on each turn. In order to begin the game, you must roll a five on at least one die, or a total of five on both dice. Find the probability... more
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09/11/22

Calculus 3 Combinations and Permutations

On a business retreat, your company of 24 executives go golfing.a. You need to divide up into foursomes (groups of four people): a first foursome, a second foursome, and so on. How many ways can... more
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08/31/22

Why is my overall correlation higher than the subgroup correlations?
I ran correlations for each grade on student test scores and the number of levels they completed on an interactive learning program. The correlations for the grades ranged from .5-.7, so why is the... more
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08/30/22

If QR = 6x + 1, PR = 14x-13, and PQ = 5x -2, find PR.
Been stuck on this problem for quite a long time now. The answers I get are not accurate. Thanks for the help.
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08/15/22

A man wishes to walk home
A man wishes to walk home, which is 10 km away down a main road and then a further 4 km down a smaller road perpendicular to the first. The man can walk at 5 km/hr along the road and can walk... more
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08/08/22

Probability problems

Q: if A and B are two events in S and P(A)=2/3 and P(B)=1/4 and P(A' intersection B')=1/61) P(A' - B') =a) 1/6b)1/3c)3/6d)11/15__________________________2) P( A U B ) = a) 1/3b) 2/6c) 5/6d)... more
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08/03/22

how would we start this

generate a continuous and differentiable function f(x)fx with the following properties: f(x)fx is decreasing at x=−5x=-5 f(x)fx has a local minimum at x=−2x=-2 f(x)fx has a local maximum at x=2x=2  
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07/25/22

Probability problem about trials
Independent trials are performed, each with probability p of success. Let Pn be the probability that n trials result in an even number of successes. Show that:
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07/19/22

Statistics - Pareto Distribution
Hello everyone! I'm taking an Mathematical Stat course at university and I came up with this question.Question can be found via(the question involves hard to type notations, so I thought of... more
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