Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. a cell phone company offers two plans to its subsc

A cell phone company offers two plans to its subscribers. At the time new subscribers sign...

70.2K

Verified Solution

Question

Statistics

A cell phone company offers two plans to its subscribers. At thetime new subscribers sign up, they are asked to provide somedemographic information. The mean yearly income for a sample of 40subscribers to Plan A is $50,500 with a standard deviation of$6,700. For a sample of 25 subscribers to Plan B, the mean incomeis $53,300 with a standard deviation of $6,300.

At the 0.02 significance level, is it reasonable to conclude themean income of those selecting Plan B is larger? Hint: For thecalculations, assume the Plan A as the first sample.

The test statistic is ____. (Negative value should be indicatedby a minus sign. Round your answer to 2 decimal places.)

Answer & Explanation Solved by verified expert
3.8 Ratings (404 Votes)
Test and CI for Two Variances Method Null hypothesis Sigma1 Sigma2 1 Alternative hypothesis Sigma1 Sigma2 not 1 Significance level Alpha 002 Statistics Sample N StDev Variance 1 40    See Answer
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

Q

Discuss why the historical-cost accounting model may not providedecision-relevant information in an inflationary environment.MUST...Discuss...

Accounting
Q

In the following problems answer is given in bracket, I just want the steps how to...

Chemistry
Q

Are there differences in the way each caregiver interacts with children that may either positively or...

Psychology
Q

(a) What are Multiplexers, and why are they important in computers (b) What are D flip-flops, and...

Electrical Engineering
Q

How can better education and training along with a \"system of care\" approach reduce the risk...

Operations Management
Q

A microscope that is parfocal has the following characteristic Focusing on one objective automatically focuses...

Biology
Q

Sexual spore production by Penicillium is by a zygosporangium O True O False

Biology
Q

Rewrite the integral O O O FIT 0 0 O 2 8 8 p2 0...

Calculus
Q

Microsoft Corporation reported the following information in its financial statements for three successive...

Accounting
Q

A lease agreement that qualifies as a finance lease calls for annual lease payments of...

Accounting
Q

To compare entities in the same industry, it is important to determine the accounting methods...

Accounting
Q

When the stockholders invest cash in the business, what is the effect? a Liabilities increase...

Accounting