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Tema [17]
2 years ago
15

It has been reported that 80% of federal government employees use e-mail. If a sample of 215 federal government employees is sel

ected, find the mean, variance, and standard deviation of the number who use e-mail.
Mathematics
1 answer:
Morgarella [4.7K]2 years ago
7 0

Answer:

Mean = 200

Variation = .83

SD = .17

Please Mark Brainliest If This Helped!

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9/15 + 7/15= ?<br><br><br><br><br> Pls help I’m being dumb :0
Mashutka [201]
I think the answer is 1.06666666667
7 0
3 years ago
The cost to a store for an MP3 player is $60. The selling price is $1.05. A classmate says that the markup is 175% because $105/
Lapatulllka [165]
<span>MP3 player is $60
</span><span>The selling price is $105

</span><span>A classmate says that the markup is 175% because $105/$60=1.75 . Is your classmate correct?

No. IT's not correct

Original price $60
Selling price $105

$105 - $60 = $45

So

45/60 x 100 = 75%

Price is markup 75% from $60 to $105</span>
7 0
4 years ago
Can someone help me solve #9!?
yarga [219]
Dy/dx = (4y²)(x⁴/³)

Find ∫(4y²)(x⁴/³) =∫(4y²∛(x⁴)dx = 3∛(x⁴).y² +c or 3x⁴/³.y² + c
4 0
3 years ago
Calculate the volume of each diagrams.
wariber [46]

The volume of the solid objects are 612π in³ and 1566πcm³

<h3>Volume of solid object</h3>

The given objects are composite figures consisting of two shapes.

The volume of the blue figure is expressed as;

Volume = Volume of cylinder + volume of hemisphere

Volume = πr²h + 2/3πr³

Volume =  πr²(h + 2/3r)

Volume =  π(6)²(13+2/3(6))

Volume = 36π(13 + 4)

Volume = 612π in³

For the other object

Volume = Volume of cylinder + volume of cone

Volume = πr²h + 1/3πr²h

Volume =  π(9)²(15) + 1/3π(9)²(13)

Volume=  81π (15+13/3)
Volume= 1566πcm³

Hence the volume of the solid objects are 612π in³ and 1566πcm³

Learn more on volume of composite figures here: brainly.com/question/1205683

#SPJ1

8 0
2 years ago
Can u guys help in this question
Rudiy27
The answer is between 12 & 13
5 0
3 years ago
Read 2 more answers
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