/*! 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} Q.3.1 A large auto dealership keeps tr... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 6: Q.3.1 (page 373)

A large auto dealership keeps track of sales and leases agreements made during each hour of the day. Let 蠂= the number of cars sold and 纬= the number of cars leased during the 铿乺st hour of business on a randomly selected Friday. Based on previous records, the probability distributions of 蠂and 纬are as follows:

顿别铿乶别D=X-Y

Find and interpret 渭D.

Short Answer

Expert verified

From the given information, it is expected that0.4 more of the cars would be sold out than leasing.

Step by step solution

01

Given Information

It is given in the question that,

渭蠂=1.1,蟽蠂=0.943

渭纬=0.7,蟽纬=0.64

D=蠂-纬

02

Step 2: Explanation

The mean can be calculated as :

渭D=渭蠂-渭纬=1.1鈭�0.7=0.4

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 91影视!

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

Binomial setting? A binomial distribution will be approximately correct as a model for one of these two settings and not for the other. Explain why by briefly discussing both settings. (a) When an opinion poll calls residential telephone numbers at random, only 20%of the calls reach a person. You watch the random digit dialing machine make 15calls. Xis the number that reaches a person

(b) When an opinion poll calls residential telephone numbers at random, only 20%of the calls reach a live person. You watch the random digit dialing machine make calls. Yis the number of calls until the first live person answers

A housing company builds houses with two-car garages. What percent of households have more cars than the garage can hold? (a) 13%

(b) 20%

(c) 45%

(d) 55%

(e) 80%

19. Housing in San Jose How do rented housing units differ from units occupied by their owners? Here are the distributions of the number of rooms for owner-occupied units and renter-occupied units in San Jose,
California:

Let X = the number of rooms in a randomly selected owner-occupied unit and Y = the number of rooms in a randomly chosen renter-occupied unit.
(a) Make histograms suitable for comparing the probability distributions of X and Y. Describe any differences that you observe.
(b) Find the mean number of rooms for both types of housing unit. Explain why this difference makes sense.
(c) Find the standard deviations of both X and Y. Explain why this difference makes sense.

Blood types In the United States, 44%of adults have type O blood. Suppose we choose 7U.S. adults at random. Let X=the number who have type O blood. Use the binomial probability formula to find P(X=4). Interpret this result in context.

20. Size of American households In government data, a household consists of all occupants of a dwelling unit, while a family consists of two or more persons who live together and are related by blood or marriage. So all families form households, but some households are not families. Here are the distributions of household size and family size in the United States:

Let X = the number of people in a randomly selected U.S. household and Y = the number of people in a randomly chosen U.S. family.
(a) Make histograms suitable for comparing the probability distributions of X and Y. Describe any differences that you observe.
(b) Find the mean for each random variable. Explain why this difference makes sense.
(c) Find the standard deviations of both X and Y. Explain why this difference makes sense.

See all solutions

Recommended explanations on Math Textbooks

Applied Mathematics

Read Explanation

Decision Maths

Read Explanation

Logic and Functions

Read Explanation

Calculus

Read Explanation

Statistics

Read Explanation

Geometry

Read Explanation
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.