A JEE aspirant estimates that she will be successful with an 80 percent chance if she studies 10 hours per day, with a 60 percent chance if she studies 7 hours per day and with 40 percent chance if she studies 4 hours per day. She further believes that she will study 10 hours, 7 hours and 4 hours per day with probabilities 0.1, 0.2 and 0.7 respectively.

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with a 60% chance if she studies 7 hours per day and with 40% chance if she studies 4 hours per day. She further believes that she will study 10 hours, 7 hours and 4 hours per day with probabilities 0.1 , 0.2 and 0.7 respectively. The chance she will be successful is: A. 0.28 B. 0.38 C. 0.48 D. 0.58

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with 60% chance if she studies 7 hourse per day, and with a 40% chance if she studies 4 hours per day. She further believes that she will study 10 houers, 7 hours, and 4 hours per day with probabilities 0.1,0.2and 0.7, respectively. The chance she will be successful if she studies for 4hours is

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with 60% chance if she studies 7 hourse per day, and with a 40% chance if she studies 4 hours per day. She further believes that she will study 10 houers, 7 hours, and 4 hours per day with probabilities 0.1,0.2and 0.7, respectively. The chance she will not be successful if she studies for 4hours is

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with 60% chance if she studies 7 hourse per day, and with a 40% chance if she studies 4 hours per day. She further believes that she will study 10 houers, 7 hours, and 4 hours per day with probabilities 0.1,0.2and 0.7, respectively. The chance she will be successful is

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with 60% chance if she studies 7 hourse per day, and with a 40% chance if she studies 4 hours per day. She further believes that she will study 10 houers, 7 hours, and 4 hours per day with probabilities 0.1,0.2and 0.7, respectively. The chance she will be successful is

A JEE aspirant estimates that he will be successful with an 80% chance if he studies 10 hr/day with 60% chance if he studies 7hr/day and with 40% chance if he studies 4 hr/day. Further, he believes that he will study 10 hr, 7hr and 4 hr/day with probability 0.1, 0.2 and 0.7 respectively. Given that he is successful, the probability that he studies for 4 hr/day equals.

Express : 18 hour as a per cent of 2 days