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3 years ago

Listed below are the salaries, in $000, for a sample of 15 chief financial officers in the electronics industry.

Mathematics

1 answer:

Tcecarenko [31]3 years ago

4 0

Answer:

Mean = sum of all numbers in dataset / total number in dataset

Mean = 8130/15 = 542

Median:

The median is also the number that is halfway into the set.

For median, we need to sort the data and then find the middle number which in our case is 546. Below is the sorted data

486 516 523 523 529 534 538 546 548 551 552 558 566 574 586

Standard Deviation (SD). Here X represents dataset and N= count of numbers in data

As per the SD formula, which is Sqrt ( sum (X_i - Meanx(X))/(N-1))

SD= 25.082

2) Formula for coefficient of skewness using Pearson's method (using median) is,

SK = 3* ( Mean (X) - Median(X))/(Standard Deviation) = 3*(542-546)/25.082 = -0.325

3) coefficient of skewness using the software method is also same which is -0.325

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Find the distance between the two points rounding to the nearest tenth (if necessary).

iris [78.8K]

Step-by-step explanation:

Distance between (−3,6) and (−9,−2):

$(x_1, y_1)$

= coordinates of the first point

= (-3,6)

$(x_2, y_2)$

= coordinates of the second point

= (-9,-2)

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$d = \sqrt{ (- 9 - ( - 3) {)}^{2} + ( - 2 + 6 {)}^{2} }$

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3 years ago

Please help, I think C and D are correct, but there is only one correct answer. See attatched question.

Lelechka [254]

I'm pretty sure it's C. It seemed confusing at first to me, too. Good luck on your test!

8 0

3 years ago

Read 2 more answers

WILL MARK BRAINLIEST ASAP!

musickatia [10]

Answer:

D -24/25

Step-by-step explanation:

sin(2x) = 2sin(x)cos(x)

cos(x) = ⅘

sin²(x) = 1 - cos²(x) = 1 - (⅘)²

sin²(x) = 9/25

sin(x) = -⅗

(Because 4th quadrant)

sin(2x) = 2(-⅗)(⅘)

= -24/25

4 0

3 years ago

fire work a travels at the speed 300 ft/s firework b travels 240 ft/s. firework b is launched 0.25s before firework a. how many

storchak [24]

Answer:

Both fireworks will explode after 1 seconds after firework b launches.

Step-by-step explanation:

Given:

Speed of fire work A= 300 ft/s

Speed of Firework B=240 ft/s

Time before which fire work b is launched =0.25s

To Find:

How many seconds after firework b launches will both fireworks explode=?

Solution:

Let t be the time(seconds) after which both the fireworks explode.

By the time the firework a has been launched, Firework B has been launch 0.25 s, So we can treat them as two separate equation

Firework A= 330(t)

Firework B=240(t)+240(0.25)

Since we need to know the same time after which they explode, we can equate both the equations

330(t) = 240(t)+240(0.25)

300(t)= 240(t)+60

300(t)-240(t)= 60

60(t)=60

$t=\frac{60}{60}$

t=1

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3 years ago

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LekaFEV [45]

Answer:

Answer in file:

Step-by-step explanation:

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3 years ago