Question 3 A researcher from Department of Industrial Engineering is conducting a research about the measurement...
Fantastic news! We've Found the answer you've been seeking!
Question:
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/05/6647d593216f8_7636647d59301ba4.jpg)
Transcribed Image Text:
Question 3 A researcher from Department of Industrial Engineering is conducting a research about the measurement of tire performance of a sport bike. One very important measure of tire performance is the strength index, which indicates the tire's resistance with a tire graded with a base of 100. This means that a tire with a grade of 300 should last three times as long, on average, as a tire graded with a base of 100. Consumer council wants to estimate the actual strength index of a brand name of tires that claims "graded 300" on the sidewall of the tire. A random sample of n=18 indicates a sample mean strength index of 195.3 and a sample standard deviation of 21.4. a) Assuming that the population of strength indexes is normally distributed, construct a 95% confidence interval estimate of the population mean of strength index for tires produced by this manufacturer under this brand name. Assume historical information gives population standard deviation =21.4. b) Assuming that the population of strength indexes is normally distributed, construct a 95% confidence interval estimate of the population mean of strength index for tires produced by this manufacturer under this brand name. c) Do you think that the consumer council should accuse the manufacturer of producing tires that do not meet the performance information provided on the sidewall of the tire? Explain. d) Explain why an observed strength index of 210 for a particular tire is not unusual, even though it is outside the confidence interval developed in (a). e) Assuming that the population of strength indexes is normally distributed, assume historical information gives population standard deviation =21.4. You are interested in testing whether the population mean strength is poorer than "graded 300". a. State the Ho and H b. Let significance level = 0.05. If the p-value is written as the form of P(Z>g). Find g. Question 3 A researcher from Department of Industrial Engineering is conducting a research about the measurement of tire performance of a sport bike. One very important measure of tire performance is the strength index, which indicates the tire's resistance with a tire graded with a base of 100. This means that a tire with a grade of 300 should last three times as long, on average, as a tire graded with a base of 100. Consumer council wants to estimate the actual strength index of a brand name of tires that claims "graded 300" on the sidewall of the tire. A random sample of n=18 indicates a sample mean strength index of 195.3 and a sample standard deviation of 21.4. a) Assuming that the population of strength indexes is normally distributed, construct a 95% confidence interval estimate of the population mean of strength index for tires produced by this manufacturer under this brand name. Assume historical information gives population standard deviation =21.4. b) Assuming that the population of strength indexes is normally distributed, construct a 95% confidence interval estimate of the population mean of strength index for tires produced by this manufacturer under this brand name. c) Do you think that the consumer council should accuse the manufacturer of producing tires that do not meet the performance information provided on the sidewall of the tire? Explain. d) Explain why an observed strength index of 210 for a particular tire is not unusual, even though it is outside the confidence interval developed in (a). e) Assuming that the population of strength indexes is normally distributed, assume historical information gives population standard deviation =21.4. You are interested in testing whether the population mean strength is poorer than "graded 300". a. State the Ho and H b. Let significance level = 0.05. If the p-value is written as the form of P(Z>g). Find g.
Expert Answer:
Posted Date:
Students also viewed these mathematics questions
-
For selection of controls for the case-control analysis, investigators decided to use a matching process. Which variables did they choose to match on when selecting controls? For selection of...
-
During 2013, Fischer/Black Company purchased equity securities classified as available-for-sale securities. On May 22, 2014, the company recorded the following correct journal entry to record the...
-
Analyze two companies that merged during the past three years. Describe the structure of the merger and what has happened to the resulting organization since then.
-
You are using statistical sampling to confirm accounts receivable of Pittance Manufacturing Company. The population of accounts receivable is as follows: You review the accounts receivable trial...
-
The manager of a division that produces add-on products for the automobile industry has just been presented the opportunity to invest in two independent projects. The first is an air conditioner for...
-
What is the critical value of significance and table parameters in Level of significance 0.01 Number of rows 1 Number of columns 8
-
Commissions and referral fees are not permitted for which types of services? a . . Tax services. b . . Financial planning services. c . . Audits. d . . Both B and C . .
-
The task for this question is to write and test a function that converts a distance in miles to a distance in kilometres. The relationship between the two values is given by: Dkm = 1.60934 Dm where...
-
As a 1st-year accounting student, you have been introduced to various costing methods used by companies to allocate expenses and analyze their cost structures. One of these methods is Activity-Based...
-
How to calculate .539 grams/cm^3 into density (kg/m^3)?
-
The adjusted trial balance for Happ Company follows. Adjusted Trial Balance December 31 Number 101 Account Title Cash 106 Accounts receivable 153 Trucks 154 183 Land 201 209 233 307 Common stock 318...
-
I am making the riddle game like there are some math questions and the player will get $100 for each right answer. But I need help to make this game more advanced, so I think I really help to add...
-
At the Product Design Screen - How many components can you chose from to create your unique Action-Capture Camera? (Spend a few minutes trying out the options of each component to see the change to...
-
How much more interest will be earned if $5000 is invested for 6 years at 7% compounded continuously, instead of at 7% compounded quarterly?
An Epitome Of The Natural History Of The Insects Of India 1st Edition - ISBN: 1014636329 - Free Book
![Mobile App Logo](https://dsd5zvtm8ll6.cloudfront.net/includes/images/mobile/finalLogo.png)
Study smarter with the SolutionInn App