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Chapter 17 Probability Models Flashcards | StudBud

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The blood drive has 150 donors. What is the SD of the # of donors with Type B blood.

The blood drive has 150 donors. What is the mean number of donors with Type B blood?

Chapter 17 Probability Models

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Chapter 17 from Stats Modeling the World Practice Quiz A.

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Questions 6

Answers

1
The blood drive has 150 donors. What is the mean number of donors with Type B blood?
0.11
150
16.5
0.89
2
The blood drive has 150 donors. What is the SD of the # of donors with Type B blood.
10
14.685
3.83
0.313
3
How many blood donors should the American Red Cross expect to collect until it gets a type B
9.1
1
5
11
4
What is the probability that at least 2 of the first 10 blood donors has Type B blood?
0.3028
0.9115
0.0885
0.6972
5
What is the probability that exactly 2 of the first 20 donors have Type B blood?
0.2822
0.0015
0.012
0.2
6
What is the probability that the tenth blood donor is the first donor with Type B?
0.8811
0.0385
0.0979
0.3465