In a sample of 50 people: - 21 had type O blood - 22 had type A blood - 5 had type B blood - 2 had type AB blood The document provides a frequency distribution and calculates the probabilities of different blood types based on this data.

1. 4.1 - 1Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
a. A person has type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

2. 4.1 - 2Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
a. A person has type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

3. 4.1 - 3Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
a. A person has type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

4. 4.1 - 4Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
a. A person has type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

5. 4.1 - 5Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
a. A person has type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

6. 4.1 - 6Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

7. 4.1 - 7Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

8. 4.1 - 8Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

9. 4.1 - 9Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

10. 4.1 - 10Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

11. 4.1 - 11Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
b. A person has type A or type B blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50
22 5
50
27
50
54%

12. 4.1 - 12Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

13. 4.1 - 13Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

14. 4.1 - 14Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

15. 4.1 - 15Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

16. 4.1 - 16Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

17. 4.1 - 17Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

18. 4.1 - 18Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

19. 4.1 - 19Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

20. 4.1 - 20Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

21. 4.1 - 21Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
c. A person has neither type A nor type O blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

22. 4.1 - 22Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

23. 4.1 - 23Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

24. 4.1 - 24Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

25. 4.1 - 25Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

26. 4.1 - 26Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

27. 4.1 - 27Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

28. 4.1 - 28Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

29. 4.1 - 29Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50

30. 4.1 - 30Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood.
Type Frequency
A 22
B 5
AB 2
O 21
Total 50
22 5 21
50
48
50

31. 4.1 - 31Copyright © 2010, 2007, 2004 Pearson Education, Inc. All Rights Reserved.
Example: Blood Types
In a sample of 50 people, 21 had type O blood, 22 had type A
blood, 5 had type B blood, and 2 had type AB blood. Set up a
frequency distribution and find the following probabilities.
d. A person does not have type AB blood. Alternative Solution
Since there are 50 total people in the population and 2 with Type AB
blood, then 50 – 2 = 48 people do not have Type AB blood
Type Frequency
A 22
B 5
AB 2
O 21
Total 50
50 2
50
48
50
96%