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3 years ago

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The expected lifetime of a television is 18 years with a standard deviation of 4. Use Chebychev's inequality to estimate the pro

bability that television will last between 9 and 27 years.a) 0.2435b) 0.1975c) 0.7334d) 0.8025e) 0.8504f) None of the above.

1 answer:

My name is Ann [436]3 years ago

6 0

Answer E

Step-by-step explanation:

use Caculator very easy please dont ask

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oksian1 [2.3K]

20 and 24 are the answers

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3 years ago

Please help AS LEVEL c2 tell me how to work out

Korolek [52]

$\bf [1-tan(\theta)][2sin(\theta)+1]=0\implies 
\begin{cases}
1-tan(\theta)=0\\\\
1=tan(\theta)\\\\
tan^{-1}(1)=\theta\\\\
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----------\\
2sin(\theta)+1=0\\\\
2sin(\theta)=-1\\\\
sin(\theta)=\frac{-1}{2}\\\\
sin^{-1}\left(-\frac{1}{2} \right)=\theta\\\\
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4 years ago

after a group of 24 parts were tested, 5 were found defective. about what percent of the parts were defective

Goshia [24]

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3 years ago

The frame is a rectangle that’s 16 inches by 20 inches. The craft store has 7 feet of orange ribbon. Is that enough ribbon for L

Nutka1998 [239]

Hi!

Imagine a rectangle with a width of 20 inches, and a height of 16. Find the length around the rectangle (the perimeter).

16+20+16+20=72

There are 12 inches in a feet. How many feet are in 72 inches?

72/12=6

Lana needs 6 feet of ribbon. She bought 7 feet.

7-6=1

It is enough ribbon.
1 foot will be leftover.

Hope this helps! :)
-Peredhel

5 0

3 years ago

PLS HELP! ASAP!

KATRIN_1 [288]

Answer:

Your answer is C, 10.7cm

Step-by-step explanation:

The two flat sides of the figure are 3 cm, so that part of the perimeter = 6cm

3cm is the radius of what would be a whole circle. We'll calculate the circumference, then divide by 4.

Circumference = (2)(pi)(r)

C = (2)(3.14)(3)

C = 18.84

18.84/4 = 4.71

Add 4.71 to the 6 cm above, = 10.71

Let me know if you have questions about this.

6 0

3 years ago

Read 2 more answers