A scientist wants to round 20 measurements to the nearest whole number. Let C1, C2, ..., C20 be independent Uniform(-.5, .5) random variables to indicate the rounding error from each measurement.
a. Suppose we are interested in the absolute cumulative error from rounding, which is | C1 + C2+...+C20 |. Use Chebyshev's Inequality to bound the probability that the absolute cumulative rounding error is at least 2.
.b Use the Central Limit Theorem to approximate the same probability from a. Provide a final numerical answer.
c. Find the absolute rounding error of a single measurement D = | C | where C ~ Unif(-.5,.5). Find the PDF of D and state the support

Answers

Answer 1

Therefore, the probability that the absolute cumulative rounding error is at least 2 is bounded by 5/12. Therefore, the probability that the absolute cumulative rounding error is at least 2, as approximated by the Central Limit Theorem, is approximately 0.0456.

a. Chebyshev's Inequality states that for any random variable X with finite mean μ and variance σ^2, the probability of X deviating from its mean by more than k standard deviations is bounded by 1/k^2. In this case, the random variable we are interested in is the absolute cumulative rounding error, |C1 + C2 + ... + C20|, which has mean 0 and variance Var(|C1 + C2 + ... + C20|) = Var(C1) + Var(C2) + ... + Var(C20) = 20/12 = 5/3. Using Chebyshev's Inequality with k = 2 standard deviations, we have:

P(|C1 + C2 + ... + C20| ≥ 2) ≤ Var(|C1 + C2 + ... + C20|) / (2^2)

P(|C1 + C2 + ... + C20| ≥ 2) ≤ 5/12

b. According to the Central Limit Theorem, the sum of independent and identically distributed random variables, such as C1, C2, ..., C20, will be approximately normally distributed as the sample size increases. Since each Ci has mean 0 and variance 1/12, the sum S = C1 + C2 + ... + C20 has mean 0 and variance Var(S) = 20/12 = 5/3. Using the standard normal distribution to approximate S, we have:

P(|S| ≥ 2) ≈ P(|Z| ≥ 2) = 2P(Z ≤ -2) ≈ 2(0.0228) ≈ 0.0456

where Z is a standard normal random variable and we have used a standard normal distribution table or calculator to find P(Z ≤ -2) ≈ 0.0228.

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Step-by-step explanation:

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Step-by-step explanation:

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y = -1/2 x - 3

Step-by-step explanation:

Use the coordinates from the graph:

(-6, 0) and (0, -3)

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m = -3/6

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Answer:

A. [tex]x_{1} = -44.427^{\circ}\pm n\cdot 360^{\circ}[/tex]

B. [tex]x_{2} = -135.573^{\circ}\pm n\cdot 360^{\circ}[/tex]

Step-by-step explanation:

The negative value of the sine function indicates that [tex]x[/tex] is located at third and fourth quadrants. Besides, this function has a period of 360º. There are two families of solutions:

[tex]x_{1} = \sin^{-1} (-0.7)[/tex]

[tex]x_{1} = -44.427^{\circ}\pm n\cdot 360^{\circ}[/tex]

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Hence, right answers are A and B.

simplify Cos(a+b) +Cos(a+b)​

Answers

At the risk of piling on after correct answers have already been given, I’ll offer another way to address this problem. Recall that, if
θ
is real, cos()=Re()
cos

(
θ
)
=
R
e
(
e
i
θ
)
. So, with
A
and
B
real,

(+)+(−)=(+−)=2cos()
e
i
(
A
+
B
)
+
e
i
(
A

B
)
=
e
i
A
(
e
i
B
+
e

i
B
)
=
2
e
i
A
cos

(
B
)

Finally,

cos(+)+cos(−)=Re((+)+(−))=Re(2cos())
cos

(
A
+
B
)
+
cos

(
A

B
)
=
R
e
(
e
i
(
A
+
B
)
+
e
i
(
A

B
)
)
=
R
e
(
2
e
i
A
cos

(
B
)
)

=2cos()cos()

5 times a number is at least 60.
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Answers

Answer:

5 times 12 = 60

Step-by-step explanation:

5 times 12 is at least 60

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Answer:

-32 + 2i.....

yan po Ang sagot ko jan

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Answer:

There were no more than 15 fruit snacks in the bag

Step-by-step explanation:

I hope this helps!

is this right if it's not can you help me please

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Answer:

I think its right. It look good to me. But always make sure its right before submitting

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2. 2k3 (2k2 + 5k - 4) =

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4. 8x (6x + 6) =

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all answers are in the photo

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hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

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Answer:

750

Step-by-step explanation:

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Answers

Answer:

in Earth, space, the trees

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Step-by-step explanation:

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B
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501
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NEEDED ASAP WILL MARK AS BRAINLIEST
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Answers

Explanation:

This might not be how you are supposed to do it but,

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We know that the sides are proportional so we can make:

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We get,

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3x²+3x-2x-2=0

3x(x+1)-2(x+1)

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x+1=0

3x-2=0

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Answers

Answer:

the amount of boys that HAVE a voucher is 23

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Step-by-step explanation:

Answer: follow for more answers concerning maths, biology physics and chemistry

Step-by-step explanation:

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Answers

Answer:

x= -4

Step-by-step explanation:

hope it's helpful to you

Answer:

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Answers

Answer:

15 minutes

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Answers

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Answer:

x=6

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Answer:

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Step-by-step explanation:

Simplify ⏬

Inequality from graph
Choose the inequality that represents the following graph.
MY
Cou
-5
14
13
12
+
5
1
0
1
2
3
4
MY
Choose 1 answers
Pro
21
Pro
Теа
2011
2-1
2-1
Hi

Answers

Answer:

A. x < -1

Step-by-step explanation:

Because the direction of the vector is less than -1 and the dot on -1 isn't filled (not equal to)

Answer:

option a and b is the inequality that represents the following grap

the next term of the square 3 by 1​

Answers

9514 1404 393

Answer:

  (B)  1/27

Step-by-step explanation:

The terms of the sequence have a common ratio.

  (1/8)/(3/16) = (2/16)/(3/16) = 2/3

  (1/12)/(1/8) = (2/24)/(3/24) = 2/3

  (1/18)/(1/12) = 12/18 = 2/3

The next term will be ...

  (1/18)(2/3) = 2/54 = 1/27 . . . . matches choice B


Allan and Robert are viewing a kite in the air. The kite
has an altitude of 205 feet. The angles of elevation
from the ground are shown in the picture below.
What is the total distance between Allan (Point A)
and Robert (Point R)?
A. 292.9
B.166.0
C. 458.9
D. 24.5

Answers

[tex]tan \: a = \frac{opp}{adj} = \frac{205}{adj} [/tex]

[tex]adj = \frac{205}{ \tan(35) } [/tex]

[tex]adj = 292.7703414[/tex]

//

[tex]tan \: r = \frac{opp}{adj} = \frac{205}{adj} [/tex]

[tex]adj = \frac{205}{ \tan(51) } [/tex]

[tex]adj = 166.0057268[/tex]

//

[tex]292.7703414 + 166.0057268[/tex]

[tex] = 458.7760682 \: ft.[/tex]

round as you wish.

help :> explain how you did it * quick*

Answers

Answer:

answer A

Step-by-step explanation:

Because this figure is dilated by the factor of 3 we can infer that the figure before dilation was 3 times bigger than the figure now.

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If the angle of A is 37 now then it must have been 111

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Answer:

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Step-by-step explanation:

Write the equation for this line in slope-intercept form.
y=-2x+?

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B. 2
C. -2
D. -1/2


Please explain as simply as you can I'm really struggling. Also will give brainly

Answers

Answer:

The answer is A. -4.

Step-by-step explanation:

The missing value you are looking for is the y-intercept or where the line crosses the y axis.

Your answer would be A. -4 because that’s where your line intercepts the y-axis
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