Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

describe Confidence interval for the true proportion.

1. A quality control engineer is attentive in the mean length of sheet insulation being cut automatically by machine. The wanted length of the insulation is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet.  A sample of 70 cut sheets produces a mean length of 12.14 feet. This sample will be utilized to obtain a 99% confidence interval for the mean length cut by machine.

a. The critical value to use in procurement the confidence interval is _______________

b. The confidence interval goes from ________ to ________.

c. Presume the engineer had decided to estimate the mean length to within 0.03 with 99% confidence. Then the sample size would be ________.

2. The president of a university is worried that the percentage of students who have cheated on an exam is higher than the 1% acceptable level.  A confidential arbitrary sample of 1000 students from a population of 7000 revealed that 6 of them said that they had cheated on an exam during the last semester.

a. describe what is the critical value for the 90% one-sided confidence interval for the proportion of students who had cheated on an exam during the last 12 months?

b. describe what is the upper bound of the 90% one-sided confidence interval for the proportion of students who had cheated on an exam during the last 12 months?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923375

Have any Question? 


Related Questions in Statistics and Probability

A study found that consumers spend an average of 24 per

A study found that consumers spend an average of $24 per week in cash without being aware of where it goes. Assume that the amount of cash spent without being aware of where it goes is normally distributed and that the s ...

Describe the following game with incomplete information as

Describe the following game with incomplete information as an extensive-form game. There are two players N = {I, II}. Each player has three types, TI = {I 1 , I 2 , I 3 } and TII = {II 1 , II 2 , II 3 }, with common prio ...

1 a researcher has developed the hypothesis that teenagers

1. A researcher has developed the hypothesis that teenagers are better able to learn about and remember technological information than are older adults, whereas older adults are better able to remember information about ...

Consider a sealed-bid first-price auction with two buyers

Consider a sealed-bid first-price auction with two buyers whose private values are independent; the private value of buyer 1 has uniform distribution over the interval [0, 3], and the private value of buyer 2 has uniform ...

Assignment- probability1a credit card company decides to

Assignment- Probability 1. A credit card company decides to study the frequency with which its cardholders charge for items from a certain chain of retail stores. The data values collected in the study appear to be norma ...

This exercise is similar to given exercise but instead of

This exercise is similar to given Exercise, but instead of announcing the probability of a particular event given their private information, the players announce whether or not the expectation of a particular random vari ...

Many grocery stores and large retailers such as wal-mart

Many grocery stores and large retailers such as Wal-Mart and K-Mart have installed self checkout systems so shoppers can scan their own items and cash out themselves. How do customers like this service and how often do t ...

In a recent poll of 760 homeowners in the united states one

In a recent poll of 760 homeowners in the United States, one in five homeowners reports having a home equity loan that he or she is currently paying off. Using a confidence coefficient of 0.90, derive an interval estimat ...

1 the waiting time t between successive occurrences of an

1. The waiting time T between successive occurrences of an event E in a discrete time renewal process has the probability distribution P(T =1) = 0.7, P(T = 2) = 0.3. (iii) If an observer arrives after the renewal process ...

Probabilities of graduation and publicationprofessors have

Probabilities of Graduation and Publication Professors have hundreds of students in their classes each year. Some professors teach only upper division courses to students who are in their major course of study. Of this g ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro