Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. the manufacturer of a sports car claims that the f

The manufacturer of a sports car claims that the fuel injection system lasts 48 months before...

90.2K

Verified Solution

Question

Statistics

The manufacturer of a sports car claims that the fuel injectionsystem lasts 48 months before it needs to be replaced. A consumergroup tests this claim by surveying a random sample of 10 ownerswho had the fuel injection system replaced. The ages of the cars atthe time of replacement were (in months):

27464748534630514252

(i) Use your calculator to calculate the mean age of a car whenthe fuel injection system fails x and standard deviations. (Round your answers to two decimal places.)

x =months
s =months


(ii) Test the claim that the fuel injection system lasts less thanan average of 48 months before needing replacement. Use a 5% levelof significance.

What are we testing in this problem?

single proportionsingle mean    


(a) What is the level of significance?

Answer & Explanation Solved by verified expert
4.4 Ratings (664 Votes)
    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

Physics
1.2K views

I have a pinhole 50 microns in size illuminated by a coherent laser beam. Now, I...

Biology
1.2K views

Order 100 mg Supply 125 mg per 2 mL How many mL will be administered...

Basic Math
1.2K views

5 Three vectors a b and c are mutually perpendicular with b 1 and c...

Basic Math
1.2K views

Find the critical value 2 needed to construct a confidence interval of the given level...

Calculus
1.2K views

The graph of y f x is shown in blue Draw the graph of y...

Calculus
1.2K views

The accompanying table is from a study conducted with the stated objective of addressing cell...

Algebra
1.2K views

A steep mountain is inclined 75 from the horizontal and rises to a height of...

Accounting
1.2K views

Adjusting journal entries often affect the cash account. Adjusting journal entries often affect the cash...

Accounting
1.2K views

[The following information applies to the questions displayed below] You have just been hired...

Accounting
1.2K views

Nonuniform Inputs, Weighted Average Carter Inc had the following production and cost information for its...

Accounting
1.2K views

Question One: A. Circle the alternative against the correct answer (10 Marks) ...

Accounting
1.2K views

Problem 7-7 On October 1, 2017, Nash Equipment Company sold a pecan-harvesting machine to Valco...