Calculating probability of specified events.
A study was made to examine the number of times adult males over 30 visit a physician each year. The results for an illustration of 300 were:
|
Number of visits
|
Number of adult males
|
|
|
0
|
30
|
|
|
1
|
60
|
|
|
2
|
90
|
|
|
3 or more
|
120
|
|
|
|
300
|
total
|
a) Determine what is the probability of selecting someone who visits a physician twice a year?
b) Determine what is the probability of selecting someone who visits a physical?