4. What is the probability that none of the first four customers gets over a 20% discount? 5. What is the probability that the first person to get a 30% discount is the fifth person in line?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
icon
Related questions
Topic Video
Question

#4 & #5

A large chain retail store has "scratcher" cards that customers can scratch and win a discount
at the register if the customer uses the store's credit card. The following is a table with the
discount that a customer can scratch off and the corresponding probability of that discount
being awarded. Note: the discount percentage IS NOT related to the probability. Do not use
the discount percentage to calculate any of the probabilities below.
Discount Probability
10% off
0.50
15% off
0.25
20% off
0.15
30% off
0.10
1. What is the probability a customer gets at least a 20% discount?
2. What is the probability that two customers in a row get a 10% discount?
3. What is the probability that three consecutive customers get all get 15% discounts?
4. What is the probability that none of the first four customers gets over a 20% discount?
5. What is the probability that the first person to get a 30% discount is the fifth person in
line?
6. You the 7th person in line and notice that the 5 people ahead of you have all gotten
10% discounts. The person in front of you says, "One of us has to get better than 10%
off, now"! Do you think someone is due to get a better discount now that 5 people did
not?
Transcribed Image Text:A large chain retail store has "scratcher" cards that customers can scratch and win a discount at the register if the customer uses the store's credit card. The following is a table with the discount that a customer can scratch off and the corresponding probability of that discount being awarded. Note: the discount percentage IS NOT related to the probability. Do not use the discount percentage to calculate any of the probabilities below. Discount Probability 10% off 0.50 15% off 0.25 20% off 0.15 30% off 0.10 1. What is the probability a customer gets at least a 20% discount? 2. What is the probability that two customers in a row get a 10% discount? 3. What is the probability that three consecutive customers get all get 15% discounts? 4. What is the probability that none of the first four customers gets over a 20% discount? 5. What is the probability that the first person to get a 30% discount is the fifth person in line? 6. You the 7th person in line and notice that the 5 people ahead of you have all gotten 10% discounts. The person in front of you says, "One of us has to get better than 10% off, now"! Do you think someone is due to get a better discount now that 5 people did not?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Algebraic Operations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
College Algebra
College Algebra
Algebra
ISBN:
9781337282291
Author:
Ron Larson
Publisher:
Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL