Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. a certain railway company claims that its trains r

A certain railway company claims that its trains run late 5 minutes on the average. The...

80.2K

Verified Solution

Question

Basic Math

A certain railway company claims that its trains run late 5minutes on the average. The actual times (minutes) that 10 randomlyselected trains ran late were provided giving a sample mean = 9.130and sample standard deviation s = 1.4 . In testing the company’sclaim, (2-sided test) at the significance level of 0.01 andassuming normality Find a 99% confidence interval and state whichof the following is true about trains belonging to this railwaycompany?

A. We conclude that the trains run late an average of 9.13minutes.

B. The correct answer is not among the choices.

C. We would reject the claim that the trains run late an averageof 5 minutes and conclude that they run late an average of morethan 5 minutes since the 99% confidence interval exceeds 5.

D. We do not have enough evidence to reject the claim that thetrains run late an average of 5 minutes since the value of 5 isincluded in the 99% confidence interval.

E. We would reject the claim that the trains run late an averageof 5 minutes and conclude that they run late an average of lessthan 5 minutes since 5 exceeds the entire 99% confidenceinterval.

Answer & Explanation Solved by verified expert
4.3 Ratings (524 Votes)
H0 Null Hypothesis 5 ClaimHA Alternative Hypothesis 5SE s 14 04427Test Statistic is given    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

Finance
1.2K views

Suppose $1.51 =1 pound in New York and $1.49=1 pound in London. How can foreign exchange...

Accounting
1.2K views

Impairment of assets Foodie Ltd has two separate cash generating units, ‘Fizzy Drinks’ and ‘Ice creamery’....

Psychology
1.2K views

Do you think globalization increases or reduces global and domestic inequality? Defend your answer.

Physics
1.2K views

Write 7-10 sentences describing how the three different types of heat transfer apply to the human...

General Management
1.2K views

What issues would you consider to be the most important for an organization that is considering...

General Management
1.2K views

Describe the methods used at your current (or previous) employer to motivate employees. Were these methods...

Physics
1.2K views

mm s 1 Average collision time for electrons conductor under a certain pote difference is...

Physics
1.2K views

2 A circular loop of radil magnetic field pointing perpendicular to plane of figure when...

Algebra
1.2K views

Solve for 0 where n 2 0 2 sin 0 n 6 sin 0 4...

Accounting
1.2K views

QUESTION 1 Beta Beta Division had the following information: ...

Accounting
1.2K views

Which of the following statements about organizational forms of a business is not correct? A)...

Accounting
1.2K views

a) After completing Exercise TWO, what is the correct Adjusted balance per the Books? See...