100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
MATH 225 Week 7 Assignment: Hypothesis Testing Q&A (Latest): Statistical reasoning for health sciences Chamberlain College of Nursing $21.49   Add to cart

Exam (elaborations)

MATH 225 Week 7 Assignment: Hypothesis Testing Q&A (Latest): Statistical reasoning for health sciences Chamberlain College of Nursing

 21 views  0 purchase
  • Course
  • Institution

MATH 225 Week 7 Assignment: Hypothesis Testing Q&A (Latest): Statistical reasoning for health sciences Chamberlain College of Nursing MATH225N Week 7 Assignment: Hypothesis Testing Q& A (Latest): Statistical reasoning for health sciences Chamberlain College of Nursing Steve listens to his favorit...

[Show more]

Preview 1 out of 31  pages

  • April 19, 2020
  • 31
  • 2019/2020
  • Exam (elaborations)
  • Unknown
avatar-seller
MATH225 Week 7 Hypothesis Testing Q & A


1. Steve listens to his favorite streaming music service when he works out. He wonders whether the
service algorithm does a good job of finding random songs that he will like more often than not. To
test this, he listens to 50 songs chosen by the service at random and finds that he likes 32 of them.
Use Excel to test whether Steve will like a randomly selected song more than not and then draw a conclusion in the
context of a problem. Use α = 0.05.
Ho: p = ≤ 0.5(50%) p = 0.5
Ha: p = > 0.5 (strictly ¿>≠ )
P-value = 0.02 which is <α =0.05 we reject Ho and support the Ha
Hypothesis Test for p population
proportion

(decimal
Level of Significance 0.05 )
(decimal
Proportion under H0 0.5000 )
n 50
Number of
Successes 32




0.64000
Sample Proportion 0
0.50000
StDev 0
0.07071
SE 1
1.97989
Test Statistic (z) 9
0.02385
One-Sided p-value 2
0.04770
Two-Sided p-value 4


Right-Tailed (>) 1.644854
Left-Tailed (<) -1.644854
Two-Tailed (≠) ± 1.959964


Answer: Reject the null hypothesis. There is sufficient evidence to prove that Steve will like a random selected song
more often than not.
2. A magazine regularly tested products and gave the reviews to its customers. In one of its reviews, it
tested 2 types of batteries and claimed that the batteries from company A outperformed batteries
from company B in 108 of the tests. There were 200 tests. Company B decided to sue the magazine,
claiming that the results were not significantly different from 50% and that the magazine was
slandering its good name.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 waldenquiz. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $21.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77254 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$21.49
  • (0)
  Add to cart