If trials are repeated under the same condtions then
the limit of the ratio of the number of times an event takes place to the total number
of times of the trials , as the number of trials indefinitly is called the probability
of the happening of the event. It is assumed that the ratio approaches definite finite
limit between 0 and1.
The dermination of this type of
probability depends upon the trials or experiments, unlike mathematical or apriory
definition of probablity.
But here we give you the
mathematical or a priory probability only:
There are 551
white and 261 purple flower plants . Take identical 551+261 = 812 chits and erite W
in 551 chits for white and P in the other 261 chits for purple. Mix the chits
thoroughly and heap. Close your eyes and chose a flower. Record W for the white
flower and P if the chosen chit indicates purple. Replace the chit . Do the trials
for very great number of times. Count the W's and P's.
Now
the mperical probablity of white flower plants = number of W written chits/Ttotal
number of trials.
The emperical probability of purple fower
plants = number of P written chits chosen/ Total
trials.
The a priory probability of white flower plants =
551 out of (551+261) flower plants = 551/(551+261) =
551/812.
A priority probabilty of Purple flower =
261/(551+261) = 261/812
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