 # I need excel Anonymous

### Question Description

Hello,

I need some excel questions to be answered. I dont know how to use excel.

I am attaching the questions below

Thank you. screen_shot_2020_02_11_at_10.57.49_pm.png screen_shot_2020_02_11_at_10.58.20_pm.png screen_shot_2020_02_11_at_10.58.27_pm.png screen_shot_2020_02_11_at_10.58.35_pm.png screen_shot_2020_02_11_at_10.58.43_pm.png

### Unformatted Attachment Preview

peachblack
School: Cornell University  Attached.

Least Square Method
Student Name
University
Submission Date

1

LEAST SQUARE METHOD

2

Question 1
X
Pr (X)

0
0.35

1
0.35

2
0.25

3
0.05

1. The probability of no transmission as seen in the table above is 0.35
2. The probability of at least one transmission as seen in the table is 0.35
3. The expected mean (μ) is computed by;
μX=∑xpX(x)
=[(0.35*0)+(1*0.35)+(2*0.25)+(3*0.05)]
=1
4. The variance of the number of retransmissions is defined by;
Var(X) = ∑ Xi 2 P(X = xi)−[ E(X)]2
Xi∈Sx
From the expected mean in question 3, we have our E(X) as 1
= [(0.352 *0) +(12 *0.35) +(22 * 0.25) +(32 *0.05) – 
= [0.35+1+0.45] - 
=0.8

LEAST SQUARE METHOD

3

Question 2
The mathematical representation of linear regression is y = bx + a + ε where;
Y is the dependent variable in our case clients
X is the independent variable which in this case is sales
a is the Y intercept. It ...

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Thanks for the help. Anonymous
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