anonymous
  • anonymous
A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at random, independently of other questions. Let S be the student’s score on the test. 1-Find E(S) 2-Find SE(S) 3-Find (no approximations, please) P(S=0)
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  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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FibonacciChick666
  • FibonacciChick666
so what is the probability that they get the first question right?
anonymous
  • anonymous
1/2
FibonacciChick666
  • FibonacciChick666
and just the next questions probability?

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More answers

anonymous
  • anonymous
can any one reply
anonymous
  • anonymous
can any one ans for 2nd question SE(S)
Nurali
  • Nurali
@CarlosGP Find SE(S)
Nurali
  • Nurali
Thanks @CarlosGP ur answer is right thanks
dan815
  • dan815
what does E(S) mean and SE(S) mean
anonymous
  • anonymous
Hi! E(S)=0 - correct SE(S)=4.4721359 - correct for P(S=0) - please to try "0.1762" - for this one i am not shure
Nurali
  • Nurali
0.1762 is correct answer.

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