Question
In: Statistics and Probability
The following sample observations were randomly selected: X) 6 5 4 6 10 Y) 4 ...
The following sample observations were randomly selected:
X) 6 5 4 6 10
Y) 4 6 5 2 11
a.) Determine the 0.95 confidence interval for the mean predicted when x=9.
[ , ]
b.) Determine the 0.95 prediction interval for an individual predicted when x=9
[ , ]
Solutions
Expert Solution
The excel output for prediction and confidence interval is:
Hence,
a) 0.95 confidence interval for mean:
[2.2083, 15.0225]
b) 0.95 prediction interval for an individual:
[-1.9774, 19.2081]
orchestra answered 1 year agoRelated Solutions
The following sample observations were randomly selected. x: 6, 5, 4, 6, 10 y: 4, 6,...
The following sample observations were randomly selected. x: 6,
5, 4, 6, 10 y: 4, 6, 5, 2, 11. Determine the 0.95 confidence
interval for the mean predicted when x=9. Determine the 0.95
prediction interval for an individual predicted when x=9.
The following sample observations were randomly selected. X: 5 6 2 7 11 Y: 3 6...
The following sample observations were randomly selected. X: 5 6
2 7 11 Y: 3 6 4 6 6 (a) Determine the 0.90 confidence interval for
the mean predicted when X = 7. (Do not round the intermediate
values. Round your answers to 3 decimal places.)
What is Confidence interval_____
(b) Determine the 0.90 prediction interval for an individual
predicted when X = 7. (Do not round the intermediate values. Round
your answers to 3 decimal places.) What is Prediction...
The following sample of observations was randomly selected. x: 5 3 6 3 4 4 6...
The following sample of observations was randomly selected.
x:
5
3
6
3
4
4
6
8
y:
13
15
7
12
13
11
9
5
Determine the regression equation. Use Excel Regression.
(Negative values should be indicated by a minus sign. Round
your answers to 3 decimal places.)
Y=
The following sample observations were randomly selected: 1 2 3 4 5 X: 15 8 9...
The following sample observations were randomly selected:
1
2
3
4
5
X:
15
8
9
12
8
Y:
25
22
16
16
14
a. Not available in Connect.
b. Determine the regression equation.
(Negative answer should be indicated by a minus sign. Do
not round intermediate calculations. Round the final answers to 4
decimal places.)
b =---- a =----
Y' = -----+----- X
c. Determine the value of Y' when
X is 26. (Do not round intermediate calculations....
The following sample observations were randomly selected:
The following sample observations were randomly selected:12345X:213832Y:18132249 a. Not available in Connect.b. Determine the regression equation.(Negative answer should be indicated by a minus sign. Do
not round intermediate calculations. Round the final answers to 4
decimal places.) b = a =Y' = + X c. Determine the value of Y' whenX is 11. (Do not round intermediate calculations.
Round the final answer to 4 decimal places.)
The following sample observations were randomly selected. (Round your answers to 2 decimal places.) X: 4...
The following sample observations were randomly selected.
(Round your answers to 2 decimal places.)
X:
4
5
3
6
10
Y:
9.8
10.6
8
15.4
19.6
a.
The regression equation is Yˆ Y^
= + X
b.
When X is 8 this gives Yˆ Y^ =
Exercise 13-31 (LO13-6) The following sample observations were randomly selected. (Do not round the intermediate values....
Exercise 13-31 (LO13-6) The following sample observations were
randomly selected. (Do not round the intermediate values. Negative
amount should be indicated by a minus sign. Round your answers to 3
decimal places.)
X: 4 5 2 6 10
Y: 6 3 1 7 7
A) Determine the 0.9 confidence interval for the mean predicted
when x = 4.
[ , ]
B) Determine the 0.9 prediction interval for an individual
predicted when x = 4.
[
, ]
Consider the following sample of four observations of variables Y and Z Y 3 6 5...
Consider the following
sample of four observations of variables Y and Z
Y
3
6
5
9
Z
9
12
13
16
The sample covariance
of Y and Z is: (round to two decimal places)
a.
6.25
b.
7.55
c.
5.13
d.
6.83
e.
4.55
The following sample observations were randomly selected. (Do not round the intermediate values. Round your answers...
The following sample observations were randomly selected. (Do
not round the intermediate values. Round your answers to 3 decimal
places.) X: 4 5 3 6 10 Y: 4 6 5 7 7 PictureClick here for the Excel
Data File a. Determine the 0.95 confidence interval for the mean
predicted when X = 7 ( , ) b. Determine the 0.95 prediction
interval for an individual predicted when X = 7 ( , )
1. The following sample observations were randomly selected (numbers may be different from previous problems):
1. The following sample observations were randomly selected (numbers may be different from previous problems):
X
Y
4
4
5
6
3
5
6
7
10
7
What is the predicted value of Y when X=7?
Select one:
a. 7.47
b. 26.73
c. -22.53
d. 6.31
2. A business is evaluating their advertising budget, and wishes to determine the relationship between advertising dollars spent and changes in revenue. They have compiled the information in the table below, and want...
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