How can the width of this interval be reduced

Assignment Help Other Subject
Reference no: EM131008515

A mail-order company promises its customers that the products ordered will be mailed within 72 hours after an order is placed. The quality control department at the company checks from time to time to see if this promise is fulfilled. Recently the quality control department took a sample of 50 orders and found that 35 of them were mailed within 72 hours of the placement of the orders.

a. Construct a 98% confidence interval for the percentage of all orders that are mailed within 72 hours of their placement.

b. Suppose the confidence interval obtained in part a is too wide. How can the width of this interval be reduced? Discuss all possible alternatives. Which alternative is the best?

Reference no: EM131008515

Questions Cloud

How men and women differ in their perceptions : The article did not state how the author arrived at the given percentages. What are two questions that you would want to ask the author about how the data used to compute the percentages were collected?
A bulb in a staircase has two switches, : A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logi..
The output clearly defined for all combinations of two inp : For which of the flip-flops has  the output clearly defined for all combinations of two inputs?
Problem regarding the statistics software : A Statistics professor has observed that for several years about 13% of the students who initially enroll in his Introductory Statistics course withdraw before the end of the semester.
How can the width of this interval be reduced : Suppose the confidence interval obtained in part a is too wide. How can the width of this interval be reduced? Discuss all possible alternatives. Which alternative is the best
A shunt machine has armature : Question 1) A shunt machine has armature and field resistance of 0.04 ohm and 100 ohm respectively. When connected to a 460 V d.c. supply and driven as a generator at 600 rev/min, it delivers 50 kW. Calculate its speed when running as a motor and tak..
Power of the test the inspectors conduct : Quality control, part 2. Consider again the task of the quality control inspectors in Exercise 70. a) In this context, what is meant by the power of the test the inspectors conduct?
Prepare journal entries to record the effects on shannon : Prepare journal entries to record the effects on Shannon's accounting records at December 31, 2011, for each of the items described above. Show all calculations.
The maximum torque is tooccur : 1.A 220 V, 3-phase, 4-pole, 50 Hz inductor motor of wound rotor type is supplied at ratedvoltage and frequency. The stator resistance, magnetizing reactance, and core loss arenegligible. The maximum torque produced by the rotor is 225% of full load t..

Reviews

Write a Review

Other Subject Questions & Answers

  Cross-cultural opportunities and conflicts in canada

Short Paper on Cross-cultural Opportunities and Conflicts in Canada.

  Sociology theory questions

Sociology are very fundamental in nature. Role strain and role constraint speak about the duties and responsibilities of the roles of people in society or in a group. A short theory about Darwin and Moths is also answered.

  A book review on unfaithful angels

This review will help the reader understand the social work profession through different concepts giving the glimpse of why the social work profession might have drifted away from its original purpose of serving the poor.

  Disorder paper: schizophrenia

Schizophrenia does not really have just one single cause. It is a possibility that this disorder could be inherited but not all doctors are sure.

  Individual assignment: two models handout and rubric

Individual Assignment : Two Models Handout and Rubric,    This paper will allow you to understand and evaluate two vastly different organizational models and to effectively communicate their differences.

  Developing strategic intent for toyota

The following report includes the description about the organization, its strategies, industry analysis in which it operates and its position in the industry.

  Gasoline powered passenger vehicles

In this study, we examine how gasoline price volatility and income of the consumers impacts consumer's demand for gasoline.

  An aspect of poverty in canada

Economics thesis undergrad 4th year paper to write. it should be about 22 pages in length, literature review, economic analysis and then data or cost benefit analysis.

  Ngn customer satisfaction qos indicator for 3g services

The paper aims to highlight the global trends in countries and regions where 3G has already been introduced and propose an implementation plan to the telecom operators of developing countries.

  Prepare a power point presentation

Prepare the power point presentation for the case: Santa Fe Independent School District

  Information literacy is important in this environment

Information literacy is critically important in this contemporary environment

  Associative property of multiplication

Write a definition for associative property of multiplication.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd