223k views
4 votes
Anyone that can solve probability problems please help me.

Anyone that can solve probability problems please help me.-example-1
User LiKao
by
7.6k points

1 Answer

2 votes

10.


P(\text{ice skating}\mid\text{6th grade})=\frac{P(\text{ice skating AND 6th grade})}{P(\text{6th grade})}

155 of the total 545 students belong to the 6th grade. 46 of the total 545 students belong to the 6th grade and like ice skating. In terms of probability,


P(\text{6th grade})=(155)/(545)


P(\text{ice skating AND 6th grade})=(46)/(545)

So


P(\text{ice skating}\mid\text{6th grade})=((46)/(545))/((155)/(545))=(46)/(155)

11. Similar setup. We know 171 of 545 students like skiing, and there are 74 8th graders that like skiing. So


P(\text{8th grade}\mid\text{skiing})=((74)/(545))/((171)/(545))=(74)/(171)

User Sreerag
by
7.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories