Question

The data in the table is the number of absences for 7 students and their corresponding grade.

Number of Absences 1 2 2 3 5 6 7

Grade 3.8 3.8 2 1.8 1.7 1.6 1.6

Table Step 4 of 5 : Construct the 98% confidence interval for the slope. Round your answers to three decimal places.

*USING EXCEL-------USING EXCEL-------------USING
EXCEL*

Answer #1

Regression output is given below

First of all, Input the Number of absence in column A and Grades in column B of excel sheet

Then go to

After selecting the regression

Select Column B (grades) for Input Y range

Select Column A (number of absences) for Input X range

Check the Confidence level mark and change it to 98%, then select the output options as "New workbook"

You will get the Regression output which is posted above

Output data shows that slope = -0.332 and **98% confidence interval
for slope is (-0.774 , 0.109)**

The data in the table is the number of absences for 7 students
and their corresponding grade. Number of Absences 2 3 6 6 6 7 7
Grade 3.8 2.8 2.4 2.1 2 1.9 1.6 Table Step 4 of 5 : Construct the
80% confidence interval for the slope. Round your answers to three
decimal places.

The data in the table is the number of absences for 7 students
and their corresponding grade.
Number of Absences
1
2
3
3
6
7
7
Grade
3.7
3.7
3.5
3.1
2.8
2.5
1.7
Step 4 of 5 :
Construct the 90%
confidence interval for the slope. Round your answers to three
decimal places.

The data in the table is the number of absences for 7 students
and their corresponding grade.
Number of Absences
3
4
4
6
6
7
8
Grade
3.9
3.8
3.2
3
2.8
2.8
2.5
Step 5 of 5: Construct the 95% confidence interval for the
slope. Round your answers to three decimal places.

The data in the table is the number of absences for 7 students
and their corresponding grade
Number of Absences
0
2
5
6
7
7
8
Grade
3.8
3.8
3.5
2.8
2.4
2.2
1.9
Step 1 of
5:
Calculate the sum
of squared errors (SSE). Use the values b0=4.1353 and b1=−0.2442
for the calculations. Round your answer to three decimal
places.
Step 2 of 5:
Calculate the estimated variance of errors, s^2e. Round your
answer to three decimal places....

The data in the table is the number of absences for 7 students
and their corresponding grade.
Number of Absences
3
4
4
6
6
7
8
Grade
3.9
3.8
3.2
3
2.8
2.8
2.52
Step 4 of 5 : Construct the 99% confidence interval
for the slope. Round your answers to three decimal places.
Lower endpoint ?
Upper endpoint ?

The data in the table is the number of absences for 77 students
and their corresponding grade.
Number of Absences
0
2
3
5
5
6
7
Grade
3.8
3.7
3.5
2.4
1.7
1.7
1.5
Step 1 of 5:
Calculate the sum of squared errors (SSE). Use the values
b0=4.1811 and b1=−0.3917 for the calculations. Round your answer to
three decimal places.
Step 2 of 5:
Calculate the estimated variance of errors, s2e . Round your
answer to three decimal...

The data in the table is the number of absences for 77 students
and their corresponding grade.
Number of Absences
2
4
4
5
6
7
7
Grade
3.7
3.5
3.4
3.2
3
2.4
2
Construct the 99% confidence interval for the slope. Round your
answers to three decimal places.
lower endpoint=
upper endpoint =

The data in the table is the number of absences for 7 students
and their corresponding grade.
Number of Absences
1
2
3
3
6
7
7
Grade
3.7
3.7
3.5
3.1
2.8
2.5
1.7
Calculate the estimated variance of slope, s2b1. Round your
answer to three decimal places.

The data in the table is the number of absences for 7 students
and their corresponding grade. Number of Absences 1 3 4 4 5 6 6
Grade 4 3.6 2.8 2.7 2.6 2.4 1.5 Table Step 3 of 5 : Calculate the
estimated variance of slope, s2b1. Round your answer to three
decimal places.

The data in the table is the number of absences for 7 students
and their corresponding grade.
Number of Absences
3
4
4
6
6
7
8
Grade
3.9
3.8
3.2
3
2.8
2.8
2.52
Step 1 of 5 : Calculate the sum of squared errors
(SSE). Use the values b0=4.6102 and b1=−0.2703 for the
calculations. Round your answer to three decimal places.

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