Apicnic was arranged for the members of a club. the organizer started calling all the members to find how many members would be taking part in the picnic. she could not contact 20% of them. of the remaining members, 15% did not wish to take part and the rest wanted more time to decide. finally, 80% of those who wanted more time to decide ended up going to the picnic. if a member is picked up at random, the probability that he or she needed more time to decide and finally did not attend the picnic is ? %, and the probability that he or she was contacted but did not attend the picnic is ? %

The probability that he or she needed more time to decide and finally did not attend the picnic is :  13.6%

The probability that he or she was contacted but did not attend the picnic is : 25.6%

Let P denote the probability of an event.

Now, it is given that:

→ At last 80% of 85% of 80% decided to go for picnic.

→ while 20% of 85% of 80% decided not to go to the picnic.

This means that:

The probability that he or she needed more time to decide and finally did not attend the picnic is :  (0.20×0.85×0.80)×100=13.6%

The probability that he or she was contacted but did not attend the picnic is :  [(0.80×0.85×0.20)+(0.80×0.15)]×100=25.6%

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (