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Bezzdna [24]
2 years ago
11

What is the fancy name (symbol) for the ratio of c/d?

Mathematics
1 answer:
disa [49]2 years ago
6 0
I think it is the Golden Ratio 
It kinda looks like a "p"  I hope I helped some 

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Find the indicated probability or percentage for the sampling error. The distribution of weekly salaries at a large company is r
Flauer [41]

Answer:

The probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random sample of weekly salaries of 80 employees will be at most $75 is 0.9297.

Step-by-step explanation:

According to the Central Limit Theorem if we have a non-normal population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample means will be approximately normally distributed.

Then, the mean of the distribution of sample means is given by,

\mu_{\bar x}=\mu

And the standard deviation of the distribution of sample means is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

The information provided is:

\mu=\$1000\\\sigma=\$370\\n=80

As <em>n</em> = 80 > 30, the central limit theorem can be used to approximate the sampling distribution of sample mean weekly salaries.

Let \bar X represent the sample mean weekly salaries.

The distribution of \bar X is: \bar X\sim N(\$1000,\ \$41.37)

Now we need to compute the probability of the sampling error made in estimating the mean weekly salary to be at most $75.

The sampling error is the the difference between the estimated value of the parameter and the actual value of the parameter, i.e. in this case the sampling error is, |\bar X-\mu|= 75.

Compute the probability as follows:

P(-75

                                     =P(-1.81

Thus, the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random sample of weekly salaries of 80 employees will be at most $75 is 0.9297.

3 0
3 years ago
Travel A train makes a trip at 65 mi/h. A plane
Sladkaya [172]

Answer:

hihjjjkkcjkbcgukn c

Step-by-step explanation:

v mkkjljjj

8 0
2 years ago
What’s the distance between the points (-7,-4) and (-5,-4)?
Radda [10]

Answer:

2 units

Step-by-step explanation:

Distance

= \sqrt{(-4 - (-4))^2 + (-7 - (-5))^2}

= \sqrt{0^2 + (-2)^2}

= \sqrt{(-2)^2}

= 2

3 0
3 years ago
PLEASE HELP!!!! IN NEED OF IT
prisoha [69]

Answer:

Below in bold.

Step-by-step explanation:

This is a regular polygon so all sides are congruent, therefore:

The perimeter of the polygon = 6*34 = 204 units.

We can divide the polygon into 6 conguent triangle with height 30 and base 34.

So area of 1 triangle = 1/2*34*30 = 510.

So area of the polygon = 6 * 510 = 3060 unit^2.

Perimeter of the polygon = 6*34 = 204 units.

6 0
2 years ago
6m - 8 = 2 + 9m - 1 Show your work and answer.
Nookie1986 [14]

6m-8 = 2+9m-1

6m-9m = 2+8-1

-3m=9

m = -3

3 0
3 years ago
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