Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. 25 significant does not mean important never forge

25 Significant does not mean important Never forget that even small effects can be statistically...

80.2K

Verified Solution

Question

Statistics

image

25 Significant does not mean important Never forget that even small effects can be statistically significant if the samples are large To illustrate this fact consider a sample of 148 small businesses During a three year period 15 of the 106 headed by men and 7 of the 42 headed by women failed 22 a Find the proportions of failures for businesses headed by women and businesses headed by men These sample proportions are quite close to each other Give the P value for the z test of the hypothesis that the same proportion of women s and men s busi nesses fail Use the two sided alternative The test is very far from being significant b Now suppose that the same sample proportions came from a sample 30 times as large That is 210 out of 1260 businesses headed by women and 450 out of 3180 businesses headed by men fail Verify that the proportions of failures are exactly the same as in part a Repeat the z test for the new data and show that it is now significant at the a 0 05 level c It is wise to use a confidence interval to estimate the size of an effect rather than just giving a P value Give the large sample 95 confidence intervals for the difference between the proportions of women s of

Answer & Explanation Solved by verified expert
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Civil Engineering
1.2K views

What are some environmental issues in landfills regarding leachate and gas generation, i.e. the difference between...

Psychology
1.2K views

As a new writer what are some challenges, as an individual will face? Will you have,...

Physics
1.2K views

5 An 1850 kg luxury sedan stopped at a traffic light is struck from the...

Basic Math
1.2K views

The 13 players on a volleyball team are to line up for a team photograph....

Calculus
1.2K views

Set a 0 and b 2 Find the area under fix by selecting the ff...

Algebra
1.2K views

20 You are a talk show host on a morning radio talk show You want...

Accounting
1.2K views

A three-year-old machine has a cost of $32.600, an estimated residual...

Accounting
1.2K views

Question 1: Return on investment (ROI), residual income (RI) Generic Motors...

Accounting
1.2K views

Dashboard / My courses / Acc230/Acc32201 S1) (Fall2021) / General / Quiz-1 Question 2 Not...

Accounting
1.2K views

Greener Lawn, Inc., provides lawn care and landscaping services to commercial clients. Greener Lawn uses...

Accounting
1.2K views

For the following errors, indicate the net effect on 12/31/26 Working Capital and 2026 Net...

Accounting
1.2K views

Quality Brick Company produces bricks in two processing departmentsMolding and Firing. Information relating to the...