Question
Asked Jan 18, 2020
1 views

Car Batteries Defective car batteries are a nuisance because they can strand and inconvenience drivers, and drivers could be put in danger. A car battery is considered to be defective if it fails before its warranty expires. Defects are identified when the batteries are returned under the warranty program. The Powerco Battery corporation manufactures car batteries in batches of 250, and the numbers of defects are listed below for each of 12 consecutive batches. Does the manufacturing process require correction?

3 4 2 5 3 6 8 9 12 14
help_outline

Image Transcriptionclose

3 4 2 5 3 6 8 9 12 14

fullscreen
check_circle

Expert Answer

Step 1

Note: In this context, the software usage is not mentioned. In order to obtain the chart, we have used MINITAB software to solve the problem.

Step 2

Requirements for out-of-control state:

A process is said to be out-of-statistical control if any one of the following requirements are satisfied:

  • There exists an upward or downward trend or a cyclic pattern.
  • If a sample point lies below the lower control limit or above the upper control limit.
  • There exists at least 8 consecutive sample points above or below the central line. It is known as Run Rule of 8.
Step 3

Software procedure using the MINITAB software:

  • Choose Stat > Control Charts > Attributes Charts > P.
  • In Variables, enter columns Number of Defecti...
Statistics homework question answer, step 3, image 1
fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Other

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Under what three conditions are repeated trials of an experiment called Bernoulli trials?

A: Solution: We have to determine under what three conditions are repeated trials of an experiment call...

question_answer

Q: Annual Incomes Annual incomes are known to have a distribution that is skewed to the right instead o...

A: It is given that the annual incomes distributed skewed to the right and the large random sample coll...

question_answer

Q: Unbiased Estimators  a. What is an unbiased estimator? b. For the following statistics, identify tho...

A: a)A statistic that is used to refer the value of a population parameter is termed as an estimate. An...

question_answer

Q: How do you find r in the problem 7700.00= 7000.00(1+2r)?

A: It is given, 7700 = 7000(1+2r).

question_answer

Q: Unbiased Estimators a. What is an unbiased estimator? b. For the following statistics, identify thos...

A: a)A statistic that is used to refer the value of a population parameter is termed as an estimate. An...

question_answer

Q: IQ Scores. In Exercises,find the indicated IQ score, and round to the nearest whole number. The grap...

A: z-score:The IQ score of adults follows normal distribution with mean 100 and standard deviation 15. ...

question_answer

Q: Tax Cheating? Frequencies of leading digits from IRS tax files are 152, 89, 63, 48, 39, 40, 28, 25, ...

A: The claim is to test whether the leading digits are taken from IRS tax files that confirms with Benf...

question_answer

Q: In probability and statistics, what is each repetition of an experiment called?

A: In probability and statistics, experiments are repeated many times. The repetition of an experiment ...

question_answer

Q: 1. A clinical trial is run to assess the efficacy of a new drug to reduce high blood pressure. Patie...

A: The prevalence of hypertension at the end of trial is calculated as follows: