Other
Math 227 Assignment 4.1
- Course
- Math 227 - Statistics
- Institution
- Los Angeles Pierce College
This is a comprehensive and detailed assignment with correct answers on; null and alternative hypothesis for math 227.
[Show more]
Content preview
Amanda McIntire4.1
Null and Alternative Hypothesis
For each of the following problems:
a) Write the null and alternative hypothesis.
b) Label whether the null or the alternative is the original claim.
c) Tell whether this is a left tail test, a right tail test, or a two tail test.
1. According to a CNN report, besides cell phones, 93% of Americans also own a traditional
phone. But has that percentage decreased as more and more Americans opt to only use a cell
phone and throw away their traditional phones?
Ho: p=0.93- claim
H1: p<0.93
Left tailed test
2. According to a recent Newspaper article, people in California spend 1.25 hours a day eating
and drinking. Suppose we want to test the claim that the number of hours spent eating and
drinking is really 1.25 hours.
Ho: u= 1.25- claim
H1: 1.25
Two tailed Test
3. More and more Americans are becoming financially sound and opting to not own a credit
card. According to an article in USA Today, 74% of Americans still have at least one credit card.
But this claim seems a little on the low side. We think that more than 74% of Americans own a
credit card.
Ho: p= 0.74 claim
H1:p> 0.74. Right tailed test
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller anyiamgeorge19. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83100 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now