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3 years ago

What is the most difficult math problem in the world?

Mathematics

2 answers:

Mumz [18]3 years ago

8 0

Pi+1 using the whole number of pi

solmaris [256]3 years ago

4 0

xn+yn=zn where n>2 and n is an integer

<h2>bolded letters are exponents!!!!</h2>

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A forester studying the effects of fertilization on certain pine forests in the Southeast is interested in estimating the averag

ahrayia [7]

Answer:

$P(-2 \leq \bar X -\mu \leq 2)$

If we divide both sides by $\frac{\sigma}{\sqrt{n}}$ we got:

$P(\frac{-2}{\frac{4}{\sqrt{9}}}\leq Z \leq \frac{2}{\frac{4}{\sqrt{9}}})$

And we can use the normal distribution table or excel to find the probabilites and we got:

$P(-1.5 \leq Z \leq 1.5)= P(Z$ Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the area of a population, and for this case we know the distribution for X is given by:

$X \sim N(M,4)$

Where $\mu=M$ and $\sigma=4$

We select a a sample of n =4 and since the distribution for X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And we want to find this probability:

$P(-2 \leq \bar X -\mu \leq 2)$

If we divide both sides by $\frac{\sigma}{\sqrt{n}}$ we got:

$P(\frac{-2}{\frac{4}{\sqrt{9}}}\leq Z \leq \frac{2}{\frac{4}{\sqrt{9}}})$

And we can use the normal distribution table or excel to find the probabilites and we got:

$P(-1.5 \leq Z \leq 1.5)= P(Z$

8 0

3 years ago

For a sample of similar sized all-electric homes, the march electric bills were (to the nearest dollar): $212, $191, $176, $129,

miss Akunina [59]

Lowest to highest...

Range = $92 – $212 ...//Ans...

5 0

3 years ago

Which expression represents the correct form for the quotient and remainder, written as partial fractions, of StartFraction 6 x

diamong [38]

Answer:

The answer is "quotient =2x+5 and remainder =6x+1".

Step-by-step explanation:

Some of the data is missing that's why defined this question as follows:

Given:

$\to \frac{6x^3+15x^2+20x+36} {3x^2+7}$

when we divide the above value it will give the quotient =2x+5 and remainder =6x+1.

8 0

3 years ago

Read 2 more answers

Draw a circle at the coordinates listed

lawyer [7]

There are no coordinates listed, Sorry.

3 0

3 years ago

2. Find the distance between A (-1, 4) and B (1.-1)<br> 5.39<br> 5.19<br> 5.29<br> 5.09

Verizon [17]

<h3>Answer: A) 5.39</h3>

=====================================================

Explanation:

Apply the distance formula.

$d = \sqrt{ (x_1-x_2)^2+(y_1-y_2)^2}\\\\d = \sqrt{ (-1-1)^2+(4-(-1))^2}\\\\d = \sqrt{ (-1-1)^2+(4+1)^2}\\\\d = \sqrt{ (-2)^2+(5)^2}\\\\d = \sqrt{ 4+25}\\\\d = \sqrt{ 29}\\\\d \approx 5.38516\\\\d \approx 5.39\\\\$

You could also use the pythagorean theorem which is what the distance formula is based off of.

6 0

3 years ago

What is the most difficult math problem in the world?​

What is the most difficult math problem in the world?