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AlekseyPX
3 years ago
5

Which is a graph of a proportional relationship?

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
3 0

Step-by-step explanation:

Is a straight line through the origin

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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
Describe the transformations of the following function. y=tan(2x-π)
Romashka [77]

Answer:

To quickly solve this problem, we can use a graphing tool or a calculator to plot the equation.

Please see the attached image below, to find more information about the graph

The equation is:

y = tan(2x - π)

y = tan (2*(x-π/2))

We can compare it to its parent function

g(x) = tan(x)

The answer is

Option a.

Horizontal shrink by 1/2 and horizontal shift of π/2 to the right

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3 years ago
The circle below is being
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But where is the pic. Post a pic I’ll answer its
6 0
2 years ago
Please helpp <br> 25 = (a - 29/10
dedylja [7]

Step-by-step explanation:

If you like my answer than please mark me brainliest and follow me thanks

3 0
3 years ago
If the factory has available 270 tires, 90 frames, and 170 pedals, which item would limit the amount of complete tricycles that
Yuri [45]

Answer:

The pedals

Step-by-step explanation:

A tricycle requires 3 tires, 1 frame, and 2 pedals.

Divide all the amounts by the amounts needed for one tricycle.

270/3=90

90/1=90

170/2=85

The pedals can only be assembled onto 85 tricycles while everything else can be assembles into 90 tricycles.

7 0
3 years ago
Read 2 more answers
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