Amo ng a group of 2500 peo ple, 35 perc ent invest in municipal bo nds, 18 perc ent invest in oil
stocks, and 7 perc ent invest in bot h municipal bonds and oil stock s. If 1 perso n is to be rando mly
selected fro m 2500 people, what is the probability t hat the perso n selected w ill be o ne who invests
in municipal bonds but not in oil stocks?

• Probability will be 700/2500 = 7/25
  
  As given in question
  people in (M) = 35% of 2500 = 875
  People in (O) = 18% of 2500 = 450
  And,
  People in both (O & M) = 7% of 2500 = 175
  So,
  No. of people who invested in municipal bonds but not in oil stocks = 875-175
  = 700
  So, probability = 700/2500 = 7/25
• 12 years agoHelpfull: Yes(62) No(1)
• Ans-7/25
  people in (M)= 35%
  people in both(M & o)= 7%
  so, people only in (M)= (35-7)%= 28%
  no. of persons invested only in (M)= 28% of 2500= 700
  so, probability= 700/2500= 7/25
• 12 years agoHelpfull: Yes(6) No(0)
• person invested only in oil=875-175=700
  person only invested in mb=450-175=275
  total sample space=2500
  probability that person selected will be mb=700/2500=7/25.
• 12 years agoHelpfull: Yes(1) No(0)
• no. of people who invested in oil band only = 35% - 7%= 28%
  
  so probability = 28/100 = 7/25.. ans.
• 12 years agoHelpfull: Yes(1) No(0)
• municipal bonds only=35-7=28%
  so in 100 in municipal bonds but not in oil stocks is 28
  " " 1 " " " " " " " =28/100=7/25 (Ans)....
• 12 years agoHelpfull: Yes(1) No(0)
• ans=7/25
  
  people both in oil and municpal 2500*7%=175
  so in municpal=2500*35%-175=700
  so probablity=favourable=700/2500(total)
• 12 years agoHelpfull: Yes(0) No(0)