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2 years ago

Please help me, I need the answer in the next 5mins. AND NO LINKS!!!!!!!

Mathematics

1 answer:

viktelen [127]2 years ago

6 0

The table shows a constant of proportionality the equation would be x*2=y

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In a recent survey by the National Association of Colleges and Employers, the average starting salary for college graduate with

puteri [66]

Answer:

A sample size of 21 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

Using an estimated standard deviation of $11,605

This means that $\sigma = 11605$

What sample size do you need to have a margin of error equal to $5000 with 95% confidence

A sample size of n is needed. n is found when M = 5000. So

$M = z\frac{\sigma}{\sqrt{n}}$

$5000 = 1.96\frac{11605}{\sqrt{n}}$

$5000\sqrt{n} = 1.96*11605$

$\sqrt{n} = \frac{1.96*11605}{5000}$

$(\sqrt{n})^2 = (\frac{1.96*11605}{5000})^2$

$n = 20.69$

Rounding up,

A sample size of 21 is needed.

5 0

3 years ago

Find the mean, median, mode, and range of the data set 19, 7, 16, 2, 10, 6, 7. If necessary, round

Maslowich

Answer:

Mean: 9.6

Median: 7

Mode: 7

Range: 17

Step-by-step Explanation:

Mean: add all the numbers then divide the sum by how many numbers there are 

19 + 7 + 16 + 2 + 10 + 6 + 7 = 67

67 / 7 = 9.57 --> 9.6

Median: arrange your numbers in numerical order, count how many numbers you have (if odd, divide by 2 and round up to the position of a median number, if even, divide by 2 and go to that number in position)

2, 6, 7, 7, 10, 16, 19 (7 numbers = since its odd, divide by 2 which equals 3.5, round it up to 4 and go to the number in the 4th position, in this case 7)

Mode: Put the number in order again and determine which number appears the most

2, 6, 7, 7, 10, 16, 19 = 7 appears twice while the rest only appears once

Range: subtract the lowest value from the highest value

19 - 2 = 17

4 0

2 years ago

Read 2 more answers

Find the equation of the line shown.

kirill [66]

Answer:

Step-by-step explanation:

7 0