Marginal & Conditional Probability
Not what you're looking for?
See attached file for table.
Which Probability formula should be used? Please explain.
A researcher wants to prove the efficacy of three drugs to treat headaches. Results are given in the following table. If one of these subjects is randomly selected:
12- Find the probability that the subject had a headache given that the subject was treated with Aleve answers : A) 0.56 B) 0.47 C) 0.74 D) 0.64
is this P( A |B) probability that event A occurs given that event B has occurred already
or P( B |A) probability that event B occurs given that event A has occurred already
Please explain in detail
13- Find the probability that the subject had no headache or was treated with Tylenol: answers A) 0.18 B) 0.52 C) 0.81 D) 0.33
Is this P(A U B) = P(A) + P(B) - P(A n B)
Please explain
14- Find the probability of getting someone who was NOT treated with Aleve
answers A) 0.80 B) 0.58 C) 0.54 D) 0.94
Purchase this Solution
Solution Summary
The solution provides step by step method for the calculation of probabilities and conditional probabilities. Formula for the calculation and Interpretations of the results are also included.
Solution Preview
Please see the attachment.
Conditional Probability
A researcher wants to prove the efficacy of three drugs to treat headaches. Results are given in the following table. If one of these subjects is randomly selected , see attached File
12- Find the probability that the subject had a headache given that the subject was treated with Aleve answers : A) 0.56 B) 0.47 C) 0.74 D) 0.64
Hint:
Let A be the event that the subject had a ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.