Concept explainers
Medical: Blood Type Blood type AB is found in only 3% of the population (Reference: Textbook of Medical Physiology, by A. Guyton, MD). If 250 people are chosen at random, what is the
(a) 5 or more will have this blood type?
(b) between 5 and 10 will have this blood type?
(a)
To find:
The probabilitythat 5 or morewill have the blood type AB.
Answer to Problem 19CR
Solution:
The probabilitythat 5 or morewill have the blood type AB is 0.8665
Explanation of Solution
Calculation:
We have random variable x having a normal distribution with mean
Now, the mean is
And standard deviation will be
Now, we calculate
By using formula for normal distribution:-
By using Table 3 from appendix:
The probability 5 or more that will have blood type AB is 0.8665.
(b)
To find:
The probabilitythat between 5 and 10 will have blood type AB.
Answer to Problem 19CR
Solution:
The probability that between 5 and 10 will have blood type AB is 0.7330.
Explanation of Solution
Calculation:
We have random variable x having a normal distribution with mean
Now, we calculate
Now, mean and standard deviation are as
Further,
Thus, the desired probability is 0.7330.
Want to see more full solutions like this?
Chapter 7 Solutions
Understanding Basic Statistics
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL