View + 125% ▼ Zoom 三 III Add Category Pivot Table DAILY RETURN WHEAT PRICES Credit Score Adult Before Seminar 1 2 3 4 5 608 620 610 650 640 After Seminar 646 692 715 669 725 ITT 6 7 8 9 10 11 12 680 655 602 644 656 632 664 786 700 650 660 650 680 702 + A ☑ Insert Table Chart Text Shape Media Comment Collaborate CREDIT_SCORE ACTIVE VS FAILED RETAIL COMPANY Sheet Name CREDIT_SCORE Background Format Organize Sheet Duplicate Sheet Delete Sheet
View + 125% ▼ Zoom 三 III Add Category Pivot Table DAILY RETURN WHEAT PRICES Credit Score Adult Before Seminar 1 2 3 4 5 608 620 610 650 640 After Seminar 646 692 715 669 725 ITT 6 7 8 9 10 11 12 680 655 602 644 656 632 664 786 700 650 660 650 680 702 + A ☑ Insert Table Chart Text Shape Media Comment Collaborate CREDIT_SCORE ACTIVE VS FAILED RETAIL COMPANY Sheet Name CREDIT_SCORE Background Format Organize Sheet Duplicate Sheet Delete Sheet
Chapter2: Formatting Workbook Text And Data
Section: Chapter Questions
Problem 1.7CP
Related questions
Question
Excel output:
The credit scores for 12 randomly selected adults who are considered high risk barrowers before and two years after they attend a personal finance seminar are given in Excel file under CREDIT SCORE sheet.
You will run a significance test to check if there is enough evidence to support the claim that the personal finance seminar helps adults increase their credit scores.
You’ll use α = 0.01 for significance test.
a) What is the critical value at the 0.01 level of significance? Be sure and include whether this critical value is a z or t value and, if appropriate, include the degrees of freedom associated with this statistical test.
Transcribed Image Text:View
+
125% ▼
Zoom
三
III
Add Category
Pivot Table
DAILY RETURN
WHEAT PRICES
Credit Score
Adult
Before Seminar
1
2
3
4
5
608
620
610
650
640
After Seminar
646
692
715
669
725
ITT
6
7
8
9
10
11
12
680
655
602
644
656
632
664
786
700
650
660
650
680
702
+
A
☑
Insert
Table Chart Text Shape
Media Comment
Collaborate
CREDIT_SCORE
ACTIVE VS FAILED RETAIL COMPANY
Sheet Name
CREDIT_SCORE
Background
Format Organize
Sheet
Duplicate Sheet
Delete Sheet
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