Answer 7

7) A security code is going to be set up using the rst 10 counting numbers (0 through 9). (One of these numbers is chosen for a \"code\". Please ask if you need more explanation of this problem.) a) Write the sample space S for this situation. Use set notation to express it. b) Let event A = the number is odd. Write this event in set notation. c) Now nd the probability of event A and write it using correct probability notation. (:1) Now let event B = a number after 6. Write this event in set notation. e) Now nd the probability of event B and write it using correct probability notation. f) i) Tell me what it means to want to write the set (A and B). ii) Then write this set using correct set notation and iii) write and calculate the probability of (A and B) using correct notation. g) i) Tell me what it means to want to write the set (A or B). ii)Then write this set using correct set notation and iii) write and calculate the probability of (A or B) using correct notation. h) Let event C = a number before 3. Write this event using set notation. i) Find P(B and C). j) Now find P(B or C). k) What kind of events are events B and C that you got the answer you got for P(B and C)