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An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches – 0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained all these students is
  • a)
    0
  • b)
    2550
  • c)
    7525
  • d)
    9375
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
An examination paper has 150 multiple-choice questions of one mark eac...
Let the marks obtained per question be a random variable X. It’s probability  distribution table is given below: 
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Community Answer
An examination paper has 150 multiple-choice questions of one mark eac...
A negative mark of 0.25.
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An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches – 0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained all these students isa)0b)2550c)7525d)9375Correct answer is option 'D'. Can you explain this answer?
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An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches – 0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained all these students isa)0b)2550c)7525d)9375Correct answer is option 'D'. Can you explain this answer? for Mathematics 2024 is part of Mathematics preparation. The Question and answers have been prepared according to the Mathematics exam syllabus. Information about An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches – 0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained all these students isa)0b)2550c)7525d)9375Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mathematics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches – 0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained all these students isa)0b)2550c)7525d)9375Correct answer is option 'D'. Can you explain this answer?.
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