Homework Help: Statistics

Posted by Cassie on Friday, July 8, 2011 at 2:47pm.

On a very short quiz, there is one multiple choice question with 5 possible choices (a, b, c, d, e) and one true or false question. Assume you are taking the quiz but do not have any idea what the correct answer is to either question. You mark an answer to each question anyway. Assume that the events are independent of each other.

A) What is the probability that you have given the correct answer to both questions?

B) What is the probability that only one of the two answers is correct?

C) What is the probability that neither answer is correct?

D) What is the probability that only your answer to the multiple choice question is correct?

E) What is the probability that you have answered only the true or false question correctly?

Statistics - PsyDAG, Friday, July 8, 2011 at 6:35pm
Probability of all/both events occurring is found by multiplying the individual probabilities.

A) 1/5 * 1/2 = ?

Probability of either/or events occurring is found by adding the individual probabilities.

B) Follow above instructions.

c) (1-1/5)(1-1/2) = ?

This info should lead you to figuring out D and E.

Answer this Question

Related Questions

stats - You took a 5-question multiple choice quiz with 4 choices for each ...
Math 150 - an online quiz is made of 10 multiple choice questions. each question...
Stats - [1.5%] ANOVA: Three groups of 5 students were tested in their ability to...
math - each question on a five-question multiple-choice quiz has answer choices...
Finite Math - A biology quiz consists of 10 multiple -choice questions. 7 must ...
Binomial Distribution - A biology quiz consists of twelve multiple-choice ...
English for john browm - Let me give you something on "multiple-choice"...
Math - a 10 question multiple choice test has 4 possible answer for each ...
math (stats) - A biology professor gives a surprise quiz consist of a true/false...
English - When making multiple choice quiz for students about speaking. Do I ...

For Further Reading

First Name:
School Subject:
Answer: