Access over 20 million homework & study documents

Stat Questions

Content type
User Generated
Subject
Statistics
School
Florida International University
Type
Homework
Rating
Showing Page:
1/19
STATISTICS 1
Statistics Assignment
Student Name:
Institutional Affiliation:
Course Title:
Instructor:
Date:

Sign up to view the full document!

lock_open Sign Up
Showing Page:
2/19
STATISTICS 2
Question One
a. T-test
Research Question
Is there a link between the performance of 1.5-volt batteries and the brand of battery?
Hypotheses
Null theory: There is no link between the performance of 1.5-volt batteries and battery brand
Alternative theory: There is a link between the performance of 1.5-volt batteries and battery
brand
Level of significance
Alpha = 0.05, and n = 9
Since the alternative supposition assumes a two-tailed test, the critical value is given by;
t
ɑ/2, n-1
= t
0.025, 8
= 2.306.
Test Statistics
T =



=



T = 0.33

Sign up to view the full document!

lock_open Sign Up
Showing Page:
3/19

Sign up to view the full document!

lock_open Sign Up
End of Preview - Want to read all 19 pages?
Access Now
Unformatted Attachment Preview
STATISTICS 1 Statistics Assignment Student Name: Institutional Affiliation: Course Title: Instructor: Date: STATISTICS 2 Question One a. T-test Research Question Is there a link between the performance of 1.5-volt batteries and the brand of battery? Hypotheses Null theory: There is no link between the performance of 1.5-volt batteries and battery brand Alternative theory: There is a link between the performance of 1.5-volt batteries and battery brand Level of significance Alpha = 0.05, and n = 9 Since the alternative supposition assumes a two-tailed test, the critical value is given by; tɑ/2, n-1 = t0.025, 8 = 2.306. Test Statistics (Ȳ1− Ȳ2) T= √ = (𝑆1+𝑆2)𝑠𝑞𝑢𝑎𝑟𝑒𝑑 T = 0.33 𝑛 (8.279 − 8.243) (0.2174) 𝑠𝑞𝑢𝑎𝑟𝑒𝑑 +(0.1628)𝑠𝑞𝑢𝑎𝑟𝑒𝑑 9 √ STATISTICS 3 Rejection Criteria When using a two-tailed t-test, reject the null theory when; T < 2.306 or T > - 2.306 Decision-making Since T-value < 2.306, we fail to reject the null supposition. Conclusion Since we failed to reject the null supposition, it implies that there is no significant association between the performance of 1.5-volt batteries and the brand batteries at the 95% level. In other words, upon using the provided data, there is no evidence that the underlying playing time means for energizer and ultra-cell batteries voltage will be significantly different. Question Two a) T-test Investigation Research Question The researchers wanted to ...
Purchase document to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Anonymous
Really useful study material!

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4