Question

Determine the variance of the random variable, given p(y):

p(y) = 0.05 for y = -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17

Express your answer to 2 decimal places.

Answer #1

By
looking at the given x, y data pairs, determine if either ratio
estimation, regression estimation, difference estimation, or all of
them can be used in estimating the y variable population total.
Remember to look at the requirements for using each of these
techniques and justify your answers based on these
requirements.
Sample
x
y
1
12
60
2
16
87
3
18
91
4
10
50
5
17
94
6
11
62
7
14
67
8
13
64
9...

Find variance of the following stocks A,B and C:
Stock
A
B
C
1
3
19
-2
2
5
17
4
3
7
15
0
4
9
13
8
5
11
11
12
6
13
9
14
8
15
7
-8
9
17
5
16
10
19
3
20

Use the given data set to complete parts? (a) through? (c)
below.? (Use alphaequals?0.05.) x 10 8 13 9 11 14 6 4 12 7 5 y 9.14
8.13 8.75 8.77 9.26 8.11 6.13 3.11 9.13 7.27 4.74 LOADING... Click
here to view a table of critical values for the correlation
coefficient. a. Construct a scatterplot. Choose the correct graph
below. A. 0 4 8 12 16 0 2 4 6 8 10 x y A scatterplot has a
horizontal...

Is there enough evidence that the average number of PURPLE
Skittles in a package is greater than the average number of ORANGE
Skittles in a package? Use the attached Skittles sample and test at
the significance level of .01
Package
Red
Orange
Yellow
Green
Purple
Total
Dominant Color
1
15
15
16
12
14
72
Y
2
13
6
11
16
15
61
G
3
9
9
10
18
15
61
G
4
7
9
8
18
15
57
G...

I need a breakdown to perform in excel for numbers 7,8,9. I am
unsure of how I calculate the times. heres the data set and the
questions.
Calculate the probability that a flight will depart early or on
time.
Calculate the probability that a flight will arrive late.
Calculate the probability that a flight departs late or arrives
early.
DEP_Delay
ARR_Delay
-4
0
-3
-3
0
-5
-7
-1
8
3
-1
-5
3
8
11
6
-6
0
-5...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

Part A. In the past it has been found that the arrival time have
a population mean value of μ = 13 and a population standard
deviation of σ = 6.26. Using the given data, test whether this mean
has changed. Use the critical value approach to test the
hypothesis. The significance level alpha is set at 0.05 . The
original data of time taken is given below. Show the process by
using excel (Formulas).
Part B. Test the hypothesis...

#
Variable
X
Variable
Y
1
205
1500
2
70
750
3
199
1500
4
151
1250
5
181
1250
6
217
1250
7
94
1000
8
298
2000
9
135
1000
10
211
1500
11
116
1250
12
72
500
13
82
500
14
206
1500
15
245
2000
16
219
1500
17
63
750
18
200
1500
19
151
1250
20
44
500
what is the coefficient of determination.
Perform a hypothesis test to determine if it is...

Dep Delay
Arr Delay
q1
-13
-9
q3
1
3
IQR
14
12
stdev
9.211846
9.660933
negative
291
zero
39
positive
170
total (should be 500)
500
all data is for arrival data. please help me explain these
can someone help me answer these questions and tell me how to
put them in excel.thanx in advance
1. Define a random variable (X) so
that your chosen data set represents values of X.
2. Is your chosen random variable discrete or...

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