We tossed a coin 150 times, 80 talls and 70 heads were obtained.
what is the probability of getting a tall?
Answers
Answer:
It is quite simple. You may easily understand it.Before finding the probability of any questions first try to find out the number of sample space. If you once got the sample space then you can easily find out whatever you want.
Now find out the sample space. Start with head and put one tail and shift it left. Similarly two or three tails.
Sample space
HHH, HHT, HTH, THH, HTT, THT, TTH, TTT
Total number of sample space is = 8
Now you have to understand that what does at least means.
It means you have to consider the value with 2 head or more.
For at least two head
HHH , HHT , HTH, THH
Total number of outcomes =4
Probablity(atleasttwohead)=(no.ofoutcomes)/(totalno.ofpossibleoutcomes)Probablity(atleasttwohead)=(no.ofoutcomes)/(totalno.ofpossibleoutcomes)
Probablity(atleasttwohead)=4/8=1/2
explanation
Always put one things in mind that try to first solve any question by yourself and if you are not geting answer by trying for minimum 3 times then go through other medium like teachers or YouTube.
and sorry for the pic cause it's not taking the full one
