Need work to be shown please

Math 150 Exam #2 - Page 3 of 8 3. (8 points) Researchers asked students in grades 4 through 6 in three different school districts what they thought was the most important thing in school. The districts were located in rural. suburban. and urban areas. The results are below. _-__El- M _-_E_- _EE-_E_m El-___- a. What is the probability that a student is in a rural school and think grades are the most important? b. What is the probability that a student thinks sports are most important or they are in an urban school? c. What is the probability a student in this study was in a suburban school? 4. {8 points) Your nephew is selling raffle tickets as a fundraiser for their team. You buy one ticket for $2 for a chance to win a $500 T'y'. There will be one winner. If there are 1000 tickets sold. what is your expected value for buying one ticket? Outcome Values Probability