Learning Materials
Features
Discover
Chapter 4: Q20 (page 143)
In Exercises 13–20, express the indicated degree of likelihood as a probability value between 0 and 1.
Death and Taxes Benjamin Franklin said that death is a certainty of life.
The probability that death will occur is 1.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
In Exercises 9–20, use the data in the following table, which lists drive-thru order accuracy at popular fast food chains (data from a QSR Drive-Thru Study). Assume that orders are randomly selected from those included in the table.
McDonald’s | Burger King | Wendy’s | Taco Bell | |
Order Accurate | 329 | 264 | 249 | 145 |
OrderNotAccurate | 33 | 54 | 31 | 13 |
Fast Food Drive-Thru Accuracy If two orders are selected, find the probability that both of them are not accurate.
a. Assume that the selections are made with replacement. Are the events independent?
b. Assume that the selections are made without replacement. Are the events independent?
In Exercises 25–32, find the probability and answer the questions.
Genetics: Eye Color Each of two parents has the genotype brown/blue, which consists of the pair of alleles that determine eye color, and each parent contributes one of those alleles to a child. Assume that if the child has at least one brown allele, that color will dominate and the eyes will be brown. (The actual determination of eye color is more complicated than that.)
a. List the different possible outcomes. Assume that these outcomes are equally likely.
b. What is the probability that a child of these parents will have the blue/blue genotype?
c. What is the probability that the child will have brown eyes?
Finding Complements. In Exercises 5–8, find the indicated complements.
Flying In a Harris survey, adults were asked how often they typically travel on commercial flights, and it was found that , where N denotes a response of “never.” What does represent, and what is its value?
Probability from a Sample Space. In Exercises 33–36, use the given sample space or construct the required sample space to find the indicated probability.
Three Children Using the same sample space and assumption from Exercise 33, find the probability that when a couple has three children, there are exactly two girls.
Probability from a Sample Space. In Exercises 33–36, use the given sample space or construct the required sample space to find the indicated probability.
Four Children Using the same sample space and assumption from Exercise 35, find the probability that when a couple has four children, all four are of the same gender.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App