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Life expectancy for females is higher than the life expectancy for males. One reason for this is that females a better job of seeing their doctor for routine physical exams. A recent article in Yesterday's News Today studied the frequency with which 50-year old males see their doctor for routine physical exams. The article provided a probability distribution for the number of physical exams during the last 5 years for this group of males. The distribution is provided below.
Number of Routine
Physical Exams During
the Last 5 Years Probability
0 0.10
1 0.20
2 0.40
3 0.15
4 0.10
5 0.05
Suppose a 50-year old male is selected,
a. What is the probability that he had less than two routine physical exams during the last 5 years?
b. What is the probability that he had more than 3 routine physical exams during the last 5 years?
c. Calculate the means and the standard deviation of this probability distribution.
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