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2 years ago

(25^1/2 x^5) (4x^-6)

Mathematics

2 answers:

Sindrei [870]2 years ago

7 0

Answer:

50 over X

Step-by-step explanation:

dimaraw [331]2 years ago

7 0

Use distributive property :)

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A prison official wants to estimate the proportion of cases of recidivism. Examining the records of 250 convicts, the official d

son4ous [18]

Answer:

For this sample, the estimated standard error is of 0.0277

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1-p)}{n}}$

Examining the records of 250 convicts, the official determines that there are 65 cases of recidivism.

This means that $n = 250, p = \frac{65}{250} = 0.26$

For this sample, the estimated standard error is

$s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.26*0.74}{250}} = 0.0277$

For this sample, the estimated standard error is of 0.0277

4 0

2 years ago

Eighteen technicians in a cell phone repair shop are randomly selected to participate in a study comparing two screen repair tec

Masteriza [31]

Answer:

a two sample t test

Step-by-step explanation:

8 0

2 years ago

The difference between the volume of cone and the volume of a cylinder?

Sergeu [11.5K]

Solution:

we have been asked to find

The difference between the volume of cone and the volume of a cylinder?

As we know that the volume of the cone is given by the formula

$V=\frac{1}{3} \pi r^2h\\ \\ \text{where h= height of cone, r=radius } \\$

And the volume of the Cylinder is given by the formula

$V= \pi r^2h\\ \\ \text{where h=Height, r=radius}\\$

The difference between the volume of cone and the volume of a cylinder can be calculated as below

$Difference=\frac{1}{3} \pi r^2h-\pi r^2h=-\frac{2}{3}\pi r^2h$

4 0

2 years ago

Why does the sum of -4 and 3 complain more than the sum of -3 and 5

AlexFokin [52]

Because of its negatives

7 0

2 years ago

Inside a square with side length 10, two congruent equilateral triangles are drawn such that they share one side and each has on

Sphinxa [80]

Answer:

5 length

Step-by-step explanation:

The diagram attached shows two equilateral triangles ABC & CDE. Since both squares share one side of the square BDFH of length 10, then their lengths will be 5 each. To obtain the largest square inscribed inside the original square BDFH, it makes sense to draw two other equilateral triangles AGH & EFG at the upper part of BDFH with length equal to 5.

So, the largest square that can be inscribe in the space outside the two equilateral triangles ABC & CDE and within BDFH is the square ACEG.

4 0

3 years ago