Statistics

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.Find E(S), SE(S), P(S=0)

1. E(S)= 0

Anyone for SE(S) and P(S=0) ?

posted by FLu
2. Thanks FLu!
Anyone for SE(S) and P(S=0)?

posted by Magnum
3. Thanks from me Flu

posted by AmmanJordan
4. Thanks, anyone for the rest?

posted by Bea
5. Could anyone tell me the SE(S)?

posted by Kingshuk
6. SE(E)- 4.472

posted by Pebble
7. Thanks Pebble.

posted by Kingshuk
8. Thanks Pebble, did someone solves or find the C....... P(S=0)?

posted by Anonymous
9. 1.0532687

posted by Jabang

Similar Questions

Fats help maintain your cell membranes. (1 point) True False 12. Your body does not use energy when you sleep. (1 point) True False 13. People with anorexia nervosa eat large amounts of food and then purge. (1 point) True False
2. Stat HW for.

1. A student taking a midterm exam in Ancient History comes to two questions pertaining to a lecture that he missed, and so he decides to take a random guess on both questions. One question is true-false and the other is multiple
3. Math

On a true-false test, each question has exactly one correct answer: true, or false. A student knows the correct answer to 70% of the questions on the test. Each of the remaining answers she guesses at random, independently of all
4. Statistical concept 68-95-99.7

1. A student taking a midterm exam in Ancient History comes to two questions pertaining to a lecture that he missed, and so he decides to take a random guess on both questions. One question is true-false and the other is multiple
5. 7th grade health true or false

11. Disagreements are a normal part of life. (1 point) True False 12. Talking to a trustworthy adult is the best way to stop sexual abuse and get help. (1 point) True False 13. Some conflicts are made worse by peer negotiation. (1
6. Physical Ed

11. Disagreements are a normal part of life. (1 point) True False 12. Talking to a trustworthy adult is the best way to stop sexual abuse and get help. (1 point) True False 13. Some conflicts are made worse by peer negotiation. (1
7. health

if i put a .... that's what ithink the answer is may u checkitin tell what i got wrong so i can retry to do it 11. Fats help maintain your cell membranes. (1 point)True False .... 12. Your body does not use energy when you sleep.