Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. by hand solve the problem. the life in hours of a

By hand solve the problem. The life in hours of a thermocouple used in furnace is known...

70.2K

Verified Solution

Question

Statistics

  1. By hand solve the problem.

The life in hours of a thermocoupleused in furnace is known to be approximately normally distributed,with standard deviation σ=15 hours . A randomsample of 15 thermo-couples resulted in the following data:

193

192

221

183

180

200

207

187

190

219

193

222

189

190

197

  1. Using Z0. Is there evidence to support the claimthat the mean is 190 hours (α=.05) ?
  2. What is the P-value ?
  3. Construct a 99% two-sided CI on the mean life.
  4. Use the CI found in part (c) to test the hypothesis of parta

Answer & Explanation Solved by verified expert
3.9 Ratings (490 Votes)
190 n 15 197533 15 005aHo 190Ha 190calculate z test statisticsz 1945The ztest statistic is195now calculate z critical value for two tailed test    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

Jack’s friend plans to buy a boat 45 years from now, when he retires. Today’s price...

Basic Math
1.2K views

In 1997 a woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were...

Biology
1.2K views

What is a tragic flaw, and how does it impact Odysseus's journey? Answer in two...

Geometry
1.2K views

7 Classify the pair of angles in the diagram shown at the right a complementary...

Basic Math
1.2K views

Solve the equation using the quadratic formula.x-2x+17=0The solution set is.(Simplify your answer. Type an exact...

Statistics
1.2K views

2 5 pts A Gallup poll asked 1200 randomly chosen adults what they think the...

Calculus
1.2K views

Find f x f x and f x for the following function f x 7x...

Accounting
1.2K views

Erroneous Balance Sheet Cutler Corporation prepared the following balance sheet: Required: Determine the errors and...

Accounting
1.2K views

{Shareholders invested 20,000$ in cash in exchange for ordinary shares}. First:...

Accounting
1.2K views

calculate using FIFO uring 2024, a company sells...

Accounting
1.2K views

Part 1. ABC Manufacturing is trying to decide whether to eliminate Department Z, which has...

Finance
1.2K views

George has one share of stock and one bond. The total value of the two...