/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q58E Purchasing decision. Suppose you... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Purchasing decision. Suppose you are a purchasing officer for a large company. You have purchased 5 million electrical switches, and your supplier has guaranteed that the shipment will contain no more than .1% defectives. To check the shipment, you randomly sample 500 switches, test them, and find that four are defective. Based on this evidence, do you think the supplier has complied with the guarantee? Explain

Short Answer

Expert verified

A supplier is an individual, firm, as well as institution that distributes and supplies anything to clients, like commodities as well as technology.

Step by step solution

01

Step-by-Step Solution Step 1: Supplier

A supplieris a person as well as a company that sells or rents a good or service to some other organization. A supplier's function in a company is to deliver high-quality items from a producer at a reasonable cost to a distributor or retailer for resale. A supplier in a company is somebody who works as a go-between for the retailers and customers, ensuring that contact is open as well as inventory is of adequate quality.

02

The calculation is given below

Populationproportion<0.01v/sPopulationproportion>0.01

The calculation is shown below:

SampleProportion(PÁåœ)=4500=0.008

Under Ho,

z=PÁåœâˆ’PoPo(1−Po)n=0.008−0.010.01×0.99500z=−0.449467

If z > 2.326348, we will reject Ho at the 1% significant level.

Here,

If z < 2.326348, we do not reject Ho at the 1% significant level that is distributor has compiled with a guarantee.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Types of finance random variables. Security analysts are professionals who devote full-time efforts to evaluating the investment worth of a narrow list of stocks. The following variables are of interest to security analysts. Which are discrete and which are continuous random variables?

a. The closing price of a particular stock on the New York Stock Exchange.

b. The number of shares of a particular stock that are traded each business day.

c. The quarterly earnings of a particular firm.

d. The percentage change in earnings between last year and this year for a particular firm.

e. The number of new products introduced per year by a firm.

f. The time until a pharmaceutical company gains approval from the U.S. Food and Drug Administration to market a new drug.

Do social robots walk or roll? Refer to the International Conference on Social Robotics (Vol. 6414, 2010) study of the trend in the design of social robots, Exercise 2.3 (p. 72). Recall that in a random sample of 106 social (or service) robots designed to entertain, educate, and care for human users, 63 were built with legs only, 20 with wheels only, 8 with both legs and wheels, and 15 with neither legs nor wheels. Assume the following: Of the 63 robots with legs only, 50 have two legs, 5 have three legs, and 8 have four legs; of the 8 robots with both legs and wheels, all 8 have two legs. Suppose one of the 106 social robots is randomly selected. Let x equal the number of legs on the robot.

  1. List the possible values of x.
  2. Find the probability distribution of x.
  3. Find E(x)and give a practical interpretation of its value.

Estimating demand for white bread. A bakery has determined that the number of loaves of its white bread demanded daily has a normal distribution with mean 7,200 loaves and standard deviation 300 loaves. Based on cost considerations, the company has decided that its best strategy is to produce a sufficient number of loaves so that it will fully supply demand on 94% of all days.

a. How many loaves of bread should the company produce?

b. Based on the production in part a, on what percentage of days will the company be left with more than 500 loaves of unsold bread?

Flaws in the plastic-coated wire. The British Columbia Institute of Technology provides on its Web site (www.math.bcit.ca) practical applications of statistics at mechanical engineering firms. The following is a Poisson application. A roll of plastic-coated wire has an average of .8 flaws per 4-meter length of wire. Suppose a quality-control engineer will sample a 4-meter length of wire from a roll of wire 220 meters in length. If no flaws are found in the sample, the engineer will accept the entire roll of wire. What is the probability that the roll will be rejected? What assumption did you make to find this probability?

Identify the type of random variable—binomial, Poisson or hypergeometric—described by each of the following probability distributions:

a.p(x)=5xe-5x!;x=0,1,2,...

b.p(x)=(6x)(.2)x(.8)6-x;x=0,1,2,...,6

c.p(x)=10!x!(10-x)!(.9)x(.1)10-x:x=0,1,2,...,10

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.