A JEE aspirant estimates that she will be successful with an 80% chance, if she studies...

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A JEE aspirant estimates that she will be successful with an 80% chance, if she studies 10 h per day with a 60% chance, if she studies 7 h per day and with a 40% chance if she studies 4 h per day. She further believes that she will study 10 h, 7 h and 4 h, per day with probabilities 01, 02, and 0.7, respectively. 58. The probability that she will be successful, is (a) 0.28 (b) 0.38 (c) 0.48 59. Given that she is successful, the chances that she studied for 4 h, is 1 (a) (c) 12 7 12 (b) (d) (d) 0.58 5 12 11 12 60. Given that she does not achieve success, the chance that she studied for 4 h, is 17 15 - 26 (b) 26 (c) 19 26 (d) 21 26 A JEE aspirant estimates that she will be successful with an 80% chance, if she studies 10 h per day with a 60% chance, if she studies 7 h per day and with a 40% chance if she studies 4 h per day. She further believes that she will study 10 h, 7 h and 4 h, per day with probabilities 01, 02, and 0.7, respectively. 58. The probability that she will be successful, is (a) 0.28 (b) 0.38 (c) 0.48 59. Given that she is successful, the chances that she studied for 4 h, is 1 (a) (c) 12 7 12 (b) (d) (d) 0.58 5 12 11 12 60. Given that she does not achieve success, the chance that she studied for 4 h, is 17 15 - 26 (b) 26 (c) 19 26 (d) 21 26

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