Question 385490: Consider the following contingency table of travelers on a cruise ship and their ages:
Age 1st cruise 2nd cruise 3rd cruise
21 - 30 25 17 33
31 - 40 12 23 10
41 – 50 35 15 45
Total 72 55 88
A. If a person is selected at random, what is the probability it is his/her 2nd cruise? ____
B. If a person is selected at random, what is the probability the person is either in the age group 31-40 or 41-50? ____
C. If a person is selected at random, what is the probability the person is either 21-30 or on his/her 2nd cruise? _____
D. If two people are selected at random, what is the probability they are both on their 1st cruise? ____
If I get this answer correct, I will provide you with a DONATION.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Consider the following contingency table of travelers on a cruise ship and their ages:
Age 1st cruise 2nd cruise 3rd cruise
21 - 30 25 17 33
31 - 40 12 23 10
41 – 50 35 15 45
Total 72 55 88
A. If a person is selected at random, what is the probability it is his/her 2nd cruise? (total of 2nd cruise column)/(grand total)
B. If a person is selected at random, what is the probability the person is either in the age group 31-40 or 41-50? (sum of those rows)/grand total)
C. If a person is selected at random, what is the probability the person is either 21-30 or on his/her 2nd cruise? (sum of 21-30 and 2nd - intersection
of that row and column)/grand total
D. If two people are selected at random, what is the probability they are both on their 1st cruise? 144C2/grandtotalC2
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Cheers,
Stan H.
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