Three businesses in a suburb responded to a questionnaire asking how many people
ID: 3366056 • Letter: T
Question
Three businesses in a suburb responded to a questionnaire asking how many people paid for their purchases last month using cash, credit cards, and debit cards. A customer who makes a purchase is selected randomly from the sample summarized in the table. Use this information to answer the first 9 questions.
Round your final answers to the nearest thousandth.
Payment Method
Beth’s Coffee House
Michael’s PC Repair and Sales
John’s Medical Supply
Total
Cash
304
140
23
467
Debit Card
456
166
219
841
Credit Card
380
257
102
739
Total
1140
563
344
2047
1. Find the probability that the customer uses cash.
2. Find the probability that the customer shopped at John’s Medical Supply.
3. Find the probability that the customer uses cash and shopped at John’s Medical Supply.
Payment Method
Beth’s Coffee House
Michael’s PC Repair and Sales
John’s Medical Supply
Total
Cash
304
140
23
467
Debit Card
456
166
219
841
Credit Card
380
257
102
739
Total
1140
563
344
2047
Explanation / Answer
1. Find the probability that the customer uses cash.
P( customer uses cash)=467/2047=0.2281
2. Find the probability that the customer shopped at John’s Medical Supply.
P( customer shopped at John’s Medical Supply)=344/2047=0.1681
3. Find the probability that the customer uses cash and shopped at John’s Medical Supply
P(ustomer uses cash and shopped at John’s Medical Supply)=23/2047=0.01124
Hope this will be helpful. Thanks and god bless you :-)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.